Changing "Commander Anthology 2018" to "Commander Anthology Volume II" worked great, thanks!
The remaining cards that didn't match seem to be version based or very unusual (Unhinged, Unstable). E.g. Decked Builder has "Boros Guildgate (a)" and "Boros Guildgate (b)", and so forth for Izzet, Dimir and Golgari guildgates. Actually, here's the whole list:
The Ultimate Nightmare of Wizards of the Coast(R) Customer Service Unglued
B.F.M. (Big Furry Monster) Unglued
"Ach! Hans, Run!" Unhinged
Rumors of My Death . . ."" Unstable
Sword of Dungeons & Dragons Unstable
Boros Guildgate (a) Guilds of Ravnica
Boros Guildgate (b) Guilds of Ravnica
Dimir Guildgate (a) Guilds of Ravnica
Dimir Guildgate (b) Guilds of Ravnica
Golgari Guildgate (a) Guilds of Ravnica
Golgari Guildgate (b) Guilds of Ravnica
Golgari Guildgate (b) Guilds of Ravnica
Izzet Guildgate (a) Guilds of Ravnica
Izzet Guildgate (b) Guilds of Ravnica
Selesnya Guildgate (a) Guilds of Ravnica
Selesnya Guildgate (b) Guilds of Ravnica
Selesnya Guildgate (b) Guilds of Ravnica
Mana Crypt Vintage Masters <- DeckBox database doesn't offer this one, but the card does exist: http://gatherer.wizards.com/Pages/Card/
eid=383005
My plan is to create a temporary inventory of all these unmatched cards, export them to CSV, look at what makes them different from my current CSV file, make the edits and re-import the file.
I'll update this post when I get it finished.
UPDATE:
Unglued/Unhinged errors were in the placement of the " marks. Easy fix.
Sword of Dungeons & Dragons and Ultimate Nightmare... were using the right ASCII characters for TM, (R) and &. I just copied the DeckBot CSV names over to my import CSV.
Guildgates weren't fixable because Decked Builder doesn't use collector number in the CSV file so there was no way to disambiguate them, except in the name (which Decked BUilder did with the (a) and (b)). I'll manually re-enter those.
And I believe that the Vintage Masters Mana Crypt needs a database fix in DeckBox, so I'll just make a note to myself for now.
Final tally: "Inventory (65248 cards, 21970 distinct)"
-Drew