Good day, HatchEP!
Thanks for joining us here. I understand the struggle that this behavior has caused. I'm here to ensure that the data you entered will not be missing.
I'd also suggest you perform the renaming of your company file. This can help fix any unusual behavior including the missing data.
I assume you have already rebuilt your company file and updated your QuickBooks Desktop for Mac. If this issue persists, it'd be best to seek further help from our Support Team. I know you already contacted them, but they can perform an investigation to know the root cause of this issue.
In addition, I added these articles if you need assistance in creating a backup file and how to restore it:
If you have any other concerns regarding your company file, please let me know and I'll be glad to help. Need to pull up some reports or manage your lists? Count me in again and I'll assist you.
