You can’t go back. That’s been the thing will so many programs for years now. So your quick answer is no.
However, there is a workaround which has been used for years going from one NLE to another irrespective of the version or app.
EDL. You will need to run on a single layer of video and will probably lose a heaps of effects and such, it will pretty much be a cuts and cross fades only timeline. You will need to relink all the footage or recapture.
AAF. This one I haven’t tested, but in theory should do the same thing. It should keep most of if not all of the edit and effects.
– Jon 🙂
How many editors does it take to change a light bulb?