Yes yes oh god yes.

This has been happening to me for quite a long time. I originally thought that it was an artifact of my extremely memory-poor machine, but after that machine 'sploded (blew a cap on the MB and scared my son half to death) and I got a new, memory-rich machine it seemed better, but it still does it now. The new machine is about a year old, and I had this problem for what seems like at least a year prior to that. Perhaps it coincided with the new group divider? The odd thing is that it doesn't appear to always happen, and now that I think about it, it's happened when I simply adjusted the case of a single role. second try exactly the same it worked.

I've never noticed your correlation to divider-editing before; i'll make some experiments. Up until now I had the sense that there was some sort of trigger event after which it went into this mode of every other save "fails" ...

I've gotten into the habit of "Copy to XML" just before I save, check to see if it 'took', and if it didn't then re-edit and "Paste XML to cast".  Usually.  Of course, it's even more annoying when I forget to do that ...

I'll certainly try that ... it would save a lot of time and aggravation. Thanks!