I added a join to the feature class I was using as an index for a map series. There were a number of dynamic text items etc. They all lost their values. I thought maybe if I closed and reopened it, it would refresh and work. It could not reopen, so the file is basically corrupt. I saved a version before adding the join. However when I opened that I stupidly hit the "Load more recent version button" which I think just loaded the same corruption problem basically. Any advice would be appreciated as I've lost a days worth of work. I learned you can make a copy and turn the aprx file to zip to explore its contents but it seems unlikely I'll be able to recover aspects of the file without deleting the major folders at this point.