The Change Bib reference action is not available for POLs that have originated from the Community Zone. This is an issue as POLs with CKB references don't have bib record information which can be used in Analytics.

In our SalesForce case about this (00570591) we were told that POLs for an electronic item can be relinked only if it has an MMS ID in the first place, and we see from the manual that changing the bib record isn't possible using the relink action if there’s not already a bib record attached:
https://knowledge.exlibrisgroup.com/Alma/Product_Documentation/010Alma_Online_Help_(English)/020Acquisitions/020Purchasing/045Closing%2C_Reopening%2C_and_Relinking_PO_Lines#Relinking_PO_Lines

So what we want is the ability to order from the CZ and get records with an MMS ID. Ex Libris advised that “currently Alma does not have a good solution to avoid [PO Lines] to be linked to CKB records”).