diff --git a/src/eko/io/v2.py b/src/eko/io/v2.py
index 59495c445..5442e3c81 100644
--- a/src/eko/io/v2.py
+++ b/src/eko/io/v2.py
@@ -23,4 +23,6 @@ def update_metadata(paths: InternalPaths, raw: dict) -> dict:
         compatible raw yaml content
     """
     raw["data_version"] = 2
+    raw["xgrid"] = raw["bases"]["xgrid"]
+    del raw["bases"]
     return raw
diff --git a/tests/conftest.py b/tests/conftest.py
index f273c3c2e..4ff7a8224 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -68,11 +68,6 @@ def operator_card():
     return card
 
 
-@pytest.fixture
-def out_v0():
-    return pathlib.Path(__file__).parent / "data" / "v0.8.5-obf24af_t8e1305.tar"
-
-
 class EKOFactory:
     def __init__(self, theory: TheoryCard, operator: OperatorCard, path: os.PathLike):
         self.path = path
diff --git a/tests/data/v0.8.5-obf24af_t8e1305.tar b/tests/data/v0.8.5-obf24af_t8e1305.tar
deleted file mode 100644
index 1a7344309..000000000
Binary files a/tests/data/v0.8.5-obf24af_t8e1305.tar and /dev/null differ
diff --git a/tests/data/v2-LO-FFNS.tar b/tests/data/v2-LO-FFNS.tar
new file mode 100644
index 000000000..2b85eafa8
Binary files /dev/null and b/tests/data/v2-LO-FFNS.tar differ
diff --git a/tests/eko/io/test_init.py b/tests/eko/io/test_init.py
deleted file mode 100644
index e5ca0e139..000000000
--- a/tests/eko/io/test_init.py
+++ /dev/null
@@ -1,15 +0,0 @@
-import pathlib
-
-import pytest
-
-from eko import EKO
-from eko.io import legacy
-
-
-class TestLegacy:
-    def test_load_tar(self, out_v0, tmp_path: pathlib.Path):
-        oppath = tmp_path / "eko.tar"
-        with pytest.warns(UserWarning, match="alphas"):
-            legacy.load_tar(out_v0, oppath)
-        with EKO.read(oppath) as eko:
-            assert eko.metadata.data_version == 0
diff --git a/tests/eko/io/test_legacy.py b/tests/eko/io/test_legacy.py
deleted file mode 100644
index e274fd8e9..000000000
--- a/tests/eko/io/test_legacy.py
+++ /dev/null
@@ -1,19 +0,0 @@
-import pytest
-
-from eko.io import legacy
-
-
-def test_op5to4():
-    with pytest.raises(RuntimeError, match="not found"):
-        legacy.op5to4([], {})
-
-    mu2 = 1.959
-    op = 29348.2342
-    err = 54225.24
-    op4s = legacy.op5to4([mu2], {legacy.OPERATOR: [op], legacy.ERROR: [err]})
-    assert mu2 in op4s
-    assert op4s[mu2].operator == op
-    assert op4s[mu2].error == err
-
-    op4s_noerr = legacy.op5to4([mu2], {legacy.OPERATOR: [op], legacy.ERROR: None})
-    assert op4s_noerr[mu2].error is None
diff --git a/tests/eko/io/test_v2.py b/tests/eko/io/test_v2.py
new file mode 100644
index 000000000..c5e7f36bf
--- /dev/null
+++ b/tests/eko/io/test_v2.py
@@ -0,0 +1,7 @@
+import pathlib
+
+TEST = pathlib.Path(__file__).parent / "data" / "v2-LO-FFNS.tar"
+
+
+def load_v2(mp_path: pathlib.Path, out_v2):
+    pass