Jessica
The leader of my local FCPUG said it sounds like the MXF files are reading different from FCP 6 to 7? No duh! I’m not sure I’m satisfied with that answer but it’s all I’ve received. I even took this question to NAB with me this year thinking one of the FCP workshop experts would know. But I didn’t get an answer, just weird looks.
I have two systems at my place of work so if it’s necessary that I work on a project done in FCP 6 I’ll load it back to that machine.
Sorry this was no help to you. At the time this was a very frustrating problem for me. Please let me know if you get a different opinion.
Bryan