Recreating content from Version 13 in Version 9
I am still using Articulate Presenter 09, and a contractor created a course for us in Articulate Presenter 13. Our team is not ready to upgrade yet. I understand that I can't open the project using Articulate 09. However, I expected to be able to "start over" with the PowerPoint, and recreate the course in 09. I deleted the .ppta file and all of the file property references. At that point, I am able to import audio. However, when I try to publish, it tells me that the .ppta file was create in version 13, which it couldn't have been, because I just created it myself in version 09.
I've also tried changing the name of the file and am still having the same problem.
What do you have to do to strip away the version 13 to get back to the PowerPoint and recreate?