Newly uploaded decks that mess up other decks


I have been using the Zanki step one deck for awhile now and decided to try the Lightyear deck. When I uploaded it, some of the Lightyear cards got mixed in with the Zanki deck. When I tried deleting the LIghtyear deck, the cards that incorporated into the Zanki deck stayed and also changed some of the Zanki original cards.

I was wondering if there was a way to “un-install” the LIghtyear deck so that I can get back to the original Zanki deck?

Thank you in advance!

If you only imported it recently, restoring from a backup may be an option: Restoring an Automatic Backup (Recovering from Data Loss) - Frequently Asked Questions