Updating a deck with different numbers of notes

I have AnkingV11 deck which have 34705 notes. but I want to update to AnkingV12 which have 28933 notes. so there is a difference 5772 notes in my old anking deck

Is there a way I can locate those notes/cards and delete them ?

I knew how to do it. will write here in case someone needed this

Anking V12 is tagging cards with AnkingV12 so easily just update the deck and you will see the old cards with the old tag AnkingV11, you can delete those cards and it will be good as new