There is a discussion group for Autodesk Factory Design Suite and Autodesk Product Design Suite.
May I suggest a new discussion group: Autodesk Building Design Suite.
For example, as a first posting.
Currently use the Revit Architectural Suite and have been upgraded to the Building Design Suite.
When I install the Building Design Suite, will this modify my current installation or do I need to uninstall the Revit Architectural Suite and then install the Building Design Suite.
Typically all Autodesk product versions are freestanding full programs.
The S/N of the previous is needed for upgrade versions but the previous program typically does not need to be installed or modified.
There are rules as to how long you can keep the previous version that have to do with On or Off Subscription.
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