It's been a long road, thanks for all your help up to this point.  Bottom line, I have the QB Desktop 2021 (from QB Desktop 2009) and have successfully migrated all 7 of our companies. 

All are up to date and current, except for 1 of the companies, I need to restore / re-enter data from 7-18-24 to date. It was starting to run slow so that's when I went to the 2021 version.

PIease note, I can still open the 2009 qbw file (which has entries up to 10-1-24, this is my DREAM file to import to the 2021 desktop version, but for some reason, it won't migrate/update to the new version).  So, my thought, is...can I somehow export A/P and A/R transactions from the time frame I am missing 7-18-24 to 10-1-24 and import them into the 2021 version?  Thanks in advance for your help.....on the home stretch.