New db has to be one time opend otherwise merging fails

Step1: Create a new db and do not open it.

Step2: Take a db of your choise, with some caches in it

and merge it with that emty db.

Step3: Open the new created db, it ist emty.

Step 4: Create a new db and open it one time.

Step2: Take a db of your choise, with some caches in it

and merge it with the emty db.

Step3: Open the new created db, everything is fine.