This is a known issue that will be fixed in the updated 1.20 PMS beta that is due out this week. My understanding is that a simply refresh all metadata should resolve this issue once you install the new 1.20 release (keep an eye on the release notes section of the forum for when this next release is available)
I had written some very detailed and specific summaries for various collections I created, which explain how I arrived at the collection, sources consulted, etc. All of those summaries appear to be gone. I’m able to write new summaries and they appear to stay in Plex. However, I’m not able to rewrite my old summaries, since I didn’t keep the details. Is there some way to get those back or access that data in some other form that I can cut and paste?