In case you're interested, e.g., planning RMM upgrades/installs upgrades, Jazz.net provides a source of wider information, e.g., known issues and limitations articles:
Workarounds and Limitations: Known issues in Rhapsody Model Manager 6.0.5 (Rhapsody 8.3)
Workarounds and Limitations: Known issues in Rhapsody Model Manager 6.0.6 (Rhapsody 8.3.1)
Workarounds and Limitations: Known issues in Rhapsody Model Manager 6.0.6.1 (Rhapsody 8.4)
Workarounds and Limitations: Known issues in IBM Engineering Systems Design Rhapsody – Model Manager 7.0 (Rhapsody 9.0)
Workarounds and Limitations: Known issues in IBM Engineering Systems Design Rhapsody – Model Manager 7.0.1 (Rhapsody 9.0.1)
One to be aware of is the Windows file path limitation. This is one reason why I set my sandbox areas to be C:\workspaces (or something short like this).