Template frames periodically reset leading to duplicate frames
For my project I have a number of parent spreads with different layouts. When I add pages, I assign a parent spread and then I command-shift click in the frames on the layout to be able to edit them / add content. But periodically (and I am not sure what is the trigger), the pages seem to reset such that I get both my frames with the added content, and the original frames without any content.
The result appears as in the screen shot.

I then need to go in and cut the contents from the editted frames, delete those frames, enter the frames from the parent pages with shift-command-click and paste the content back in.
Any clues why this happens and how I can prevent it?
