diff --git a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear/1d_decay_chain.vtu b/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_linear/1d_decay_chain.vtu similarity index 100% rename from Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear/1d_decay_chain.vtu rename to Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_linear/1d_decay_chain.vtu diff --git a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear/1d_decay_chain_GIA.xml b/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_linear/1d_decay_chain_GIA.xml similarity index 100% rename from Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear/1d_decay_chain_GIA.xml rename to Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_linear/1d_decay_chain_GIA.xml diff --git a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear/1d_decay_chain_GIA_ts_0_t_0.000000.vtu b/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_linear/1d_decay_chain_GIA_ts_0_t_0.000000.vtu similarity index 100% rename from Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear/1d_decay_chain_GIA_ts_0_t_0.000000.vtu rename to Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_linear/1d_decay_chain_GIA_ts_0_t_0.000000.vtu diff --git 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Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear/1d_decay_chain_GIA_ts_10_t_31536000000.000000.vtu rename to Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_linear/1d_decay_chain_GIA_ts_10_t_31536000000.000000.vtu diff --git a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear/1d_decay_chain_ReactiveDomain.vtu b/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_linear/1d_decay_chain_ReactiveDomain.vtu similarity index 100% rename from Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear/1d_decay_chain_ReactiveDomain.vtu rename to Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_linear/1d_decay_chain_ReactiveDomain.vtu diff --git a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear/1d_decay_chain_upstream.vtu b/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_linear/1d_decay_chain_upstream.vtu similarity index 100% rename from Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear/1d_decay_chain_upstream.vtu rename to Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_linear/1d_decay_chain_upstream.vtu diff --git a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear_compute_only_on_dt_change/1d_decay_chain.vtu b/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_linear_compute_only_on_dt_change/1d_decay_chain.vtu similarity index 100% rename from Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear_compute_only_on_dt_change/1d_decay_chain.vtu rename to Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_linear_compute_only_on_dt_change/1d_decay_chain.vtu diff --git a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear_compute_only_on_dt_change/1d_decay_chain_GIA.xml b/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_linear_compute_only_on_dt_change/1d_decay_chain_GIA.xml similarity index 100% rename from Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear_compute_only_on_dt_change/1d_decay_chain_GIA.xml rename to Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_linear_compute_only_on_dt_change/1d_decay_chain_GIA.xml diff --git a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear_compute_only_on_dt_change/1d_decay_chain_GIA_ts_0_t_0.000000.vtu b/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_linear_compute_only_on_dt_change/1d_decay_chain_GIA_ts_0_t_0.000000.vtu similarity index 100% rename from Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear_compute_only_on_dt_change/1d_decay_chain_GIA_ts_0_t_0.000000.vtu rename to Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_linear_compute_only_on_dt_change/1d_decay_chain_GIA_ts_0_t_0.000000.vtu diff --git a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear_compute_only_on_dt_change/1d_decay_chain_GIA_ts_1000_t_3153600000000.000000.vtu b/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_linear_compute_only_on_dt_change/1d_decay_chain_GIA_ts_1000_t_3153600000000.000000.vtu similarity index 100% rename from Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear_compute_only_on_dt_change/1d_decay_chain_GIA_ts_1000_t_3153600000000.000000.vtu rename to Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_linear_compute_only_on_dt_change/1d_decay_chain_GIA_ts_1000_t_3153600000000.000000.vtu diff --git a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear_compute_only_on_dt_change/1d_decay_chain_GIA_ts_100_t_315360000000.000000.vtu b/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_linear_compute_only_on_dt_change/1d_decay_chain_GIA_ts_100_t_315360000000.000000.vtu similarity index 100% rename from Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear_compute_only_on_dt_change/1d_decay_chain_GIA_ts_100_t_315360000000.000000.vtu rename to Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_linear_compute_only_on_dt_change/1d_decay_chain_GIA_ts_100_t_315360000000.000000.vtu diff --git a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear_compute_only_on_dt_change/1d_decay_chain_GIA_ts_10_t_31536000000.000000.vtu b/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_linear_compute_only_on_dt_change/1d_decay_chain_GIA_ts_10_t_31536000000.000000.vtu similarity index 100% rename from Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear_compute_only_on_dt_change/1d_decay_chain_GIA_ts_10_t_31536000000.000000.vtu rename to Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_linear_compute_only_on_dt_change/1d_decay_chain_GIA_ts_10_t_31536000000.000000.vtu diff --git a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear_compute_only_on_dt_change/1d_decay_chain_ReactiveDomain.vtu b/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_linear_compute_only_on_dt_change/1d_decay_chain_ReactiveDomain.vtu similarity index 100% rename from Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear_compute_only_on_dt_change/1d_decay_chain_ReactiveDomain.vtu rename to Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_linear_compute_only_on_dt_change/1d_decay_chain_ReactiveDomain.vtu diff --git a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear_compute_only_on_dt_change/1d_decay_chain_upstream.vtu b/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_linear_compute_only_on_dt_change/1d_decay_chain_upstream.vtu similarity index 100% rename from Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/SparseLU_is_linear_compute_only_on_dt_change/1d_decay_chain_upstream.vtu rename to 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Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/is_linear/1d_decay_chain_GIA.xml rename to Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/linear/1d_decay_chain_GIA.xml diff --git a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/is_linear/1d_decay_chain_GIA_ts_0_t_0.000000.vtu b/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/linear/1d_decay_chain_GIA_ts_0_t_0.000000.vtu similarity index 100% rename from Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/is_linear/1d_decay_chain_GIA_ts_0_t_0.000000.vtu rename to Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/linear/1d_decay_chain_GIA_ts_0_t_0.000000.vtu diff --git a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/is_linear/1d_decay_chain_GIA_ts_1000_t_3153600000000.000000.vtu b/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/linear/1d_decay_chain_GIA_ts_1000_t_3153600000000.000000.vtu similarity index 100% rename from Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/is_linear/1d_decay_chain_GIA_ts_1000_t_3153600000000.000000.vtu rename to Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/linear/1d_decay_chain_GIA_ts_1000_t_3153600000000.000000.vtu diff --git a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/is_linear/1d_decay_chain_GIA_ts_100_t_315360000000.000000.vtu b/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/linear/1d_decay_chain_GIA_ts_100_t_315360000000.000000.vtu similarity 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diff --git a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/is_linear/1d_decay_chain_ReactiveDomain.vtu b/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/linear/1d_decay_chain_ReactiveDomain.vtu similarity index 100% rename from Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/is_linear/1d_decay_chain_ReactiveDomain.vtu rename to Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/linear/1d_decay_chain_ReactiveDomain.vtu diff --git a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/is_linear/1d_decay_chain_upstream.vtu b/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/linear/1d_decay_chain_upstream.vtu similarity index 100% rename from Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/is_linear/1d_decay_chain_upstream.vtu rename to Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/linear/1d_decay_chain_upstream.vtu diff --git a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/is_linear_compute_only_on_dt_change/1d_decay_chain.vtu b/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/linear_compute_only_on_dt_change/1d_decay_chain.vtu similarity index 100% rename from Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/is_linear_compute_only_on_dt_change/1d_decay_chain.vtu rename to Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/linear_compute_only_on_dt_change/1d_decay_chain.vtu diff --git a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/is_linear_compute_only_on_dt_change/1d_decay_chain_GIA.xml b/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/linear_compute_only_on_dt_change/1d_decay_chain_GIA.xml similarity index 100% rename from Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/is_linear_compute_only_on_dt_change/1d_decay_chain_GIA.xml rename to Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/linear_compute_only_on_dt_change/1d_decay_chain_GIA.xml diff --git a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/is_linear_compute_only_on_dt_change/1d_decay_chain_GIA_ts_0_t_0.000000.vtu b/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/linear_compute_only_on_dt_change/1d_decay_chain_GIA_ts_0_t_0.000000.vtu 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a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/varying_dt_is_linear_compute_only_on_dt_change/1d_decay_chain.vtu b/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/varying_dt_linear_compute_only_on_dt_change/1d_decay_chain.vtu similarity index 100% rename from Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/varying_dt_is_linear_compute_only_on_dt_change/1d_decay_chain.vtu rename to Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/varying_dt_linear_compute_only_on_dt_change/1d_decay_chain.vtu diff --git a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/varying_dt_is_linear_compute_only_on_dt_change/1d_decay_chain_GIA.xml 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Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/varying_dt_linear_compute_only_on_dt_change/1d_decay_chain_GIA_ts_1009_t_3153600000000.000000.vtu diff --git a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/varying_dt_is_linear_compute_only_on_dt_change/1d_decay_chain_GIA_ts_109_t_315360000000.000000.vtu b/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/varying_dt_linear_compute_only_on_dt_change/1d_decay_chain_GIA_ts_109_t_315360000000.000000.vtu similarity index 100% rename from Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/varying_dt_is_linear_compute_only_on_dt_change/1d_decay_chain_GIA_ts_109_t_315360000000.000000.vtu rename to 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--git a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/varying_dt_is_linear_compute_only_on_dt_change/1d_decay_chain_GIA_ts_19_t_31536000000.000000.vtu b/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/varying_dt_linear_compute_only_on_dt_change/1d_decay_chain_GIA_ts_19_t_31536000000.000000.vtu similarity index 100% rename from Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/varying_dt_is_linear_compute_only_on_dt_change/1d_decay_chain_GIA_ts_19_t_31536000000.000000.vtu rename to Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/varying_dt_linear_compute_only_on_dt_change/1d_decay_chain_GIA_ts_19_t_31536000000.000000.vtu diff --git a/Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/varying_dt_is_linear_compute_only_on_dt_change/1d_decay_chain_ReactiveDomain.vtu 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Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/varying_dt_is_linear_compute_only_on_dt_change/1d_decay_chain_upstream.vtu rename to Tests/Data/Parabolic/ComponentTransport/ReactiveTransport/DecayChain/GlobalImplicitApproach/varying_dt_linear_compute_only_on_dt_change/1d_decay_chain_upstream.vtu