Trying to upgrade fails with the following error:
"Recovery Manager for Active Directory cannot be installed on computers where Recovery Manager for Active Directory Forest Edition is installed. Uninstall Recovery Manager for Active Directory Forest Edition, and try again"
Incorrect version of installer
This error occurs if you are attempting to use a Recovery Manager for Active Directory installer instead of Recovery Manager for Active Directory Forest Edition or Recovery Manager for Active Directory Disaster Recovery Edition.
Download and run the applicable installer:
https://support.quest.com/recovery-manager-for-ad-forest-edition
https://support.quest.com/recovery-manager-for-ad-disaster-recovery-edition