I have discovered that hundreds, possibly into the thousands, of people in my database are missing places of birth, death, residence, burial, etc.
~The places exist in the Places File. The places also exist in the Ancestry. records for the affected individuals.
~The event/fact exists for the person with appropriate dates, but the place is blank.
~Many of these people are my direct family that have had this information entered since I started using RM7 way back when.
~I regularly backup my RM9 (every time I close it - pretty much daily)
~I have no way of knowing when this glitch happened and I would lose a lot of work by going to any of my backups - especially if I have to go back more than a week.
Any ideas how this happened and an easy way to fix it? I have corrected dozens of people already the hard way - fact by fact.
Run the Tools and hope it fixes. You may have to Restore from backup (I’d change the database name). You can Compare the 2 to see the people you’ve worked on (People View, add the Date Edited). Good luck
I run the tools every time I finish working, then I exit and back it up. 
I suspect I will have to do the compare thing. Also considering just pulling a new version from Ancestry which is more accurate at this point. The problem with this is that I would lose all my customization - groups, etc.
Sounds like you may have accidently merged or deleted the incorrect places on the Place List. Check if there is a pattern on which places are missing. The other possibility is you opened the wrong database.
Pretty convinced this was true bug at the time
This is around the time I recorded many mine “disappearing”
The only other reasonable likely cause other would point to if database was syncd to cloud in anyway. If the missing items seem to be nearly all places that seem nearly impossible to have happened through user error.