Upgraded this module from v2.0.2 to v2.1.1 on https://bugfest.folio.ebsco.com. Noticed that this module incremented RMB version from 23.12.0 to 29.1.5. Certain fixes like _id to id mapping fix has been made in RMB 25.0.0 and that's not being applied here. Hence, module has to provide necessary upgrade scripts for data migration to succeed from Edelweiss to Fameflower.
Attached is a file containing all the schema differences for which migration scripts need to be put in place.