diff --git a/app/upgrades.go b/app/upgrades.go
index 01e34518db..b6c7ae1845 100644
--- a/app/upgrades.go
+++ b/app/upgrades.go
@@ -13,6 +13,7 @@ import (
 	paramstypes "github.com/cosmos/cosmos-sdk/x/params/types"
 	"github.com/cosmos/ibc-go/v8/modules/core/exported"
 	ibctmmigrations "github.com/cosmos/ibc-go/v8/modules/light-clients/07-tendermint/migrations"
+	attributetypes "github.com/provenance-io/provenance/x/attribute/types"
 )
 
 // appUpgrade is an internal structure for defining all things for an upgrade.
@@ -282,3 +283,14 @@ func migrateBaseappParams(ctx sdk.Context, app *App) error {
 	ctx.Logger().Info("Done migrating legacy params.")
 	return nil
 }
+
+// migrateAttributeParams migrates to new Attribute Params store
+// TODO: Remove with the umber handlers.
+func migrateAttributeParams(ctx sdk.Context, app *App) {
+	attributeParamSpace := app.ParamsKeeper.Subspace(attributetypes.ModuleName)
+	maxValueLength := attributetypes.DefaultMaxValueLength
+	if attributeParamSpace.Has(ctx, attributetypes.ParamStoreKeyMaxValueLength) {
+		attributeParamSpace.Get(ctx, attributetypes.ParamStoreKeyMaxValueLength, &maxValueLength)
+	}
+	app.AttributeKeeper.SetParams(ctx, attributetypes.Params{MaxValueLength: uint32(maxValueLength)})
+}
diff --git a/x/attribute/types/params.go b/x/attribute/types/params.go
index aaaad66488..ee7f1f7084 100644
--- a/x/attribute/types/params.go
+++ b/x/attribute/types/params.go
@@ -14,6 +14,7 @@ const (
 )
 
 // Parameter store keys
+// TODO: remove with the umber (v1.19.x) handlers.
 var (
 	ParamStoreKeyMaxValueLength = []byte("MaxValueLength")
 )