CC7 Project file is not backwards compatible for opening in CS6.
Exporting then importing XML / AAF is the only avenue.
Many thanks. I've not tried XML, how much of the project is captured? Is it like the old EDL in AVID?
how much of the project is captured?
Try it and see.
You will likely get all of the source clips & transitions...
effects / transformations will be hit-and-miss.