Is upgrading Recovery Manager for Active Directory core to Recovery Manager for Active Directory Forest or DRE Edition a supported upgrade path?
Installing Forest or DRE Edition on top of the core Recovery Manager is supported. Verify all collection settings after install and update where necessary. Before doing so, please review the RMADFE or RMADDRE Release Notes and Deployment Guide to make sure you have met the system requirements. In addition, we would recommend taking a backup of the following two files:
C:\ProgramData\Quest\Recovery Manager for Active Directory\ERDiskAD.mdb