diff --git a/internal/db/fetcher/versioned.go b/internal/db/fetcher/versioned.go
index 199ca38d21..4f1b20e64f 100644
--- a/internal/db/fetcher/versioned.go
+++ b/internal/db/fetcher/versioned.go
@@ -96,8 +96,6 @@ type VersionedFetcher struct {
 	acp immutable.Option[acp.ACP]
 
 	col client.Collection
-	// @todo index  *client.IndexDescription
-	mCRDTs map[client.FieldID]merklecrdt.MerkleCRDT
 }
 
 // Init initializes the VersionedFetcher.
@@ -116,7 +114,6 @@ func (vf *VersionedFetcher) Init(
 	vf.acp = acp
 	vf.col = col
 	vf.queuedCids = list.New()
-	vf.mCRDTs = make(map[client.FieldID]merklecrdt.MerkleCRDT)
 	vf.txn = txn
 
 	// create store
@@ -329,16 +326,11 @@ func (vf *VersionedFetcher) merge(c cid.Cid) error {
 		return err
 	}
 
-	// first arg 0 is the index for the composite DAG in the mCRDTs cache
-	mcrdt, exists := vf.mCRDTs[0]
-	if !exists {
-		mcrdt = merklecrdt.NewMerkleCompositeDAG(
-			vf.store,
-			keys.CollectionSchemaVersionKey{},
-			vf.dsKey.WithFieldID(core.COMPOSITE_NAMESPACE),
-		)
-		vf.mCRDTs[0] = mcrdt
-	}
+	mcrdt := merklecrdt.NewMerkleCompositeDAG(
+		vf.store,
+		keys.CollectionSchemaVersionKey{},
+		vf.dsKey.WithFieldID(core.COMPOSITE_NAMESPACE),
+	)
 	err = mcrdt.Clock().ProcessBlock(vf.ctx, block, link)
 	if err != nil {
 		return err
@@ -357,20 +349,16 @@ func (vf *VersionedFetcher) merge(c cid.Cid) error {
 			return client.NewErrFieldNotExist(l.Name)
 		}
 
-		mcrdt, exists := vf.mCRDTs[field.ID]
-		if !exists {
-			mcrdt, err = merklecrdt.FieldLevelCRDTWithStore(
-				vf.store,
-				keys.CollectionSchemaVersionKey{},
-				field.Typ,
-				field.Kind,
-				vf.dsKey.WithFieldID(fmt.Sprint(field.ID)),
-				field.Name,
-			)
-			if err != nil {
-				return err
-			}
-			vf.mCRDTs[field.ID] = mcrdt
+		mcrdt, err := merklecrdt.FieldLevelCRDTWithStore(
+			vf.store,
+			keys.CollectionSchemaVersionKey{},
+			field.Typ,
+			field.Kind,
+			vf.dsKey.WithFieldID(fmt.Sprint(field.ID)),
+			field.Name,
+		)
+		if err != nil {
+			return err
 		}
 
 		err = mcrdt.Clock().ProcessBlock(vf.ctx, subBlock, l.Link)