Here you go, thanks.

Thank you!

This link also works, and is specific to only the 64 serialized RVR cards : Serialized RVR

They're mixed in with the rest of the RVR cards on scryfall: https://scryfall.com/sets/rvr One way to identify them in scryfall is that they append a "z" to the card number, e.g. serialized Arclight Phoenix is 331z vs 331 for non-serialized:

thanks!

Understood. To expand a little on my original comment: the behavior is different depending on if csv is imported using "merge from a file" vs "load collection". To my mind, I would expect the results to be consistent for both methods. For example, if I import the above two rows into a blank collection in UG using "merge from a file", I get 1 foil and 1 non-foil. However, if I import the above two rows using "load your collection from a file", the result is two non-foils.

Great, thank you!

Thank you!

I'm trying to import cards to UrzaGathere using the "merge" option. The .ugs files are all based on the "ID" field, but I can't find where these ID values are coming from. How can I find the ID values for a card, given the multiverse ID?