This is something I've noticed.
I'm following the instructions as provided in the table notes in the Workshop Mod. Everything's amazing and working fine... but for some reason I can construct a deck of 50 cards plus 5 Digitama... and it never seems to export in ALL the cards. :x
I have a few customer Red/Yellow decks that are in the 50s, but the Purple Deck I just put together has only exported in around 30 cards. :x As I said these are decks constructed via the Digimoncard.dev deckbuilder and exported in the TTS option as outlined in the instructions...

So why am I not able to bring in the full decks? :x
Am I missing a step somewhere? I'm not sure it's just counting each unique card because it's counting the copies individually. x.x

EDIT: Wait, I think I've figured it out. The two missing from my RedYellow deck are from the Great Legends set... I guess the missing cards just aren't supported yet? ^^;