iCloud kit sync not syncing group/database custom icons

I’m sure there is an obvious answer to this: I’m transferring my DEVONthink to a new computer. My iCloud kit sync not syncing group/database custom icons. How do I sync those?
Thanks!

Well, it appears groups may be syncing custom icons but databases aren’t.

The database icons are just customized Finder icons and not synchronized (as they’re not part of the database).

Ok, that makes sense. Thanks for your help!
TS