The issue with my files is strange, I run three company files and only one of them will backup. Not a

super techie but thinking I tried to open two of the files after the first Sonoma upgrade and both kept crashing. These are the two files that won’t back up. The company file that I never opened until the most recent Sonoma update opens and backs up just fine. I’m going to try to restore the two files that won’t back up with the most recent backup I have before the Sonoma update and see if maybe that helps? It’s definitely a file issue for me. I was told by QB’s support to try Verify and Rebuild  for the files that won’t open, but my computer freezes when I try to verify data of either of the two files that won’t back up. Will probably need to upgrade at some point down the road, but concerned if my files are corrupted I won’t be able to get them to work in the upgrade and then I’ll really be in trouble! Ugh…