Thanks for a quick response!
But I tested a small project to see if your statement was really true. It had three video tracks and one sound track. I used “Save as” “Avid Legacy AAF file”, then closed the project and imported the AAF file into an empty project. Everything was OK! Could it be that your remark isn’t valid anymore (but used to be on older versions), or am I getting something wrong here?
The problem is I don’t have FCP, so I can’t test if the export/import works all the way to FCP and back again to Vegas.