.bak appended to end of Captivate filename.cptx
In previous versions of Captiave (Cp9 and 2017) occasionally I'd end up with what appeared to be a duplicate of a course, but it had a .cptx.bak extension, and was larger than the non-bak version.. For instance, Mycourse.cptx would become Mycourse.cptx.bak.
What does this indicate? It happens much more often in v2019 (11.8.1.219).
I can usually just delete the .bak version, provided I have a normal version with the same date and roughly the same time. Or I'm pretty sure I could manually remove the .bak and then the file would open again and seemed to be fine, though it might be missing the last edit or edits.
Thanks!
