Just for the heck of it, I copied one of my deathknight decks that has missing cards, then went to build a new deck and it’s not picking up that i have a deck in my copy buffer, so then i copied it to text file. Here is the deck code that’s in my copy buffr right now.
AAECAfHhBAqm7wPypASY1AT04wSJ5gSk7wSE9gSogQWogQXipAUKnKAE/OMEieQElOQEj+0Eh/YEs/cEtvoEq4AFnqoFAAA=
so you see it’s there, but even if i go copy that from buffy then click on the deck building interface, it’s not asking me if i want to use this deck to build a new one, so you broke that too with your patch. I must say you really screwed the pooch on this one.
Just one more edit. After copying the deck to text file, i was able to manually recreate this deck without using copy paste but rather picking the cards my other deathknight decks said were missing, so it looks like the patch did something to existing decks.