Being the Administrator of our environment, it was easy for me to create, move and alter objects in our Jaspersoft environment. With alll of my users having 'ROLE_ADHOC_DESIGNER' and 'ROLE_REPORT_DESIGNER' roles plus access to the report themes characteristic to their user profiles, they were unable to save 'Report Versions' based on the OOTB Reports stored in the write-protected "CA PPM -> Reports" folder of the Repository.
I developed the attached guide to help walk our users through this apparent conundrum. Hoping that this document may help someone else facing a similar issue. There may still be some grammatical/procedural flaws included - offered on as as-is basis.