Applies to: Revit All Versions, all Disciplines
Question: Can I save my Revit file backwards to a previous version?
Answer: No, Revit does not have the ability (and has never had the ability) to save a version backwards to a previous version.
Revit changes extensively with each version, adding elements and parameters that not only add functionality, but form connections with existing Revit elements that have been upgraded from previous versions. While it might be possible in some cases to downgrade a new element into a previous version of Revit, at best it would arrive in the previous version as dead geometry. All of its behavior would be dependent on the more recent version of Revit. All behavioral relationships established to other elements in the model would also be broken, resulting in unpredictable cascading behavior which would likely the compromise the integrity of the model. A round-trip through a previous version of Revit would, at best, return a model that was substantially different from the model generated in the later version.
Tips: Before upgrading any project to a new version of Revit, be sure to:
You can run concurrent versions of Revit on the same machine. ie Revit 2011 and 2012 can run on the same machine.