diff --git a/cmd/integration/commands/refetence_db.go b/cmd/integration/commands/refetence_db.go
index 982cc4704..255acafc1 100644
--- a/cmd/integration/commands/refetence_db.go
+++ b/cmd/integration/commands/refetence_db.go
@@ -359,8 +359,21 @@ func toMdbx(ctx context.Context, from, to string) error {
 				if b.Flags&dbutils.DupSort != 0 && !b.AutoDupSortKeysConversion {
 					appendFunc = c.(ethdb.CursorDupSort).AppendDup
 				}
+				if b.Flags&dbutils.DupFixed != 0 && !b.AutoDupSortKeysConversion {
+					appendFunc = c.(ethdb.CursorDupSort).AppendDup
+				}
 			}
 		}
+
+		// migrate bucket sequences to native mdbx implementation
+		currentID, err := srcTx.Sequence(name, 0)
+		if err != nil {
+			return err
+		}
+		_, err = dstTx.Sequence(name, currentID+1)
+		if err != nil {
+			return err
+		}
 	}
 
 	err := dstTx.Commit(context.Background())
diff --git a/ethdb/kv_lmdb.go b/ethdb/kv_lmdb.go
index b46e0eeab..b1c5582dd 100644
--- a/ethdb/kv_lmdb.go
+++ b/ethdb/kv_lmdb.go
@@ -719,6 +719,10 @@ func (tx *lmdbTx) Sequence(bucket string, amount uint64) (uint64, error) {
 		currentV = binary.BigEndian.Uint64(v)
 	}
 
+	if amount == 0 {
+		return currentV, nil
+	}
+
 	newVBytes := make([]byte, 8)
 	binary.BigEndian.PutUint64(newVBytes, currentV+amount)
 	err = c.Put([]byte(bucket), newVBytes)