MKM Importing Issue

I'm running into an issue importing MKM cards via the Deckbox CSV add cards option.

Count,Tradelist Count,Name,Edition,Card Number,Condition,Language,Foil,Altered Art,Signed,Misprint,Printing Note,My Price
2,1,"Break Out",Murders at Karlov Manor,190,Near Mint,English,,,,,,0.18
1,1,"Break Out",Murders at Karlov Manor,190,Near Mint,English,foil,,,,,0.17
1,0,"Break Out",Murders at Karlov Manor,190,Near Mint,English,,,,,Alternate Art,0.07

All these cards get imported as the alternate art variant rather than just the last one.
Basically any card in MKM with an alternate art variant imports as the alternate art variant rather than the regular variant.

It also happens if I try importing using ScryFall ID rather than Printing Note.

Count,Tradelist Count,Name,Edition,Card Number,Condition,Language,Foil,Altered Art,Signed,Misprint,Scryfall ID,My Price
2,1,"Break Out",Murders at Karlov Manor,190,Near Mint,English,,,,,8c628476-0987-47d4-8d2a-cfc3977b2357,0.18
1,1,"Break Out",Murders at Karlov Manor,190,Near Mint,English,foil,,,,8c628476-0987-47d4-8d2a-cfc3977b2357,0.17
1,0,"Break Out",Murders at Karlov Manor,190,Near Mint,English,,,,,60b50a8f-2788-41df-81ca-61194960b730,0.07

Anyone have any advise on how to format the Deckbox CSV so it imports correctly?

If I export the above cards from Deckbox.org, clear my inventory, and then reimport them, it imports correctly.
I assume the above happen because Deckbox uses the Printing Id, however I won't have that until it gets into Deckbox.org.

My setup is to take the Manabox app exported csv and using a script I wrote generate a Deckbox CSV output file from it.
I do this so that I can populate my trade list automatically with whatever cards remain after my script subtracts cards that are part of my collection, in a deck, etc.