I have a strange problem with lists and added cards (for the second time). Yesterday I added some cards and made a new list. Today all is disappeared. I think it was when you updated the cards database (you added Art series cards that is wonderful :)
I've lost all entries which I note yesterday. Same situation I have few weeks ago, I've lost all tokens entries and that was after database update (Strixheaven). Maybe this problem is connected with lists and tags...Now after adding cards I make database file export :)
I have a dropbox account so I'll check that. Thanks for advice :)