According to tech support moments ago:
Fix is coming Tuesday 7/14/20.
The error ONLY affects reporting issues.
I was very worried about spending the time to input transactions, and then when the fix came out having to use the restore from a backup function, and then reentering data. According to tech support answering that vey direct question about reentering transactions, it is ok to input all of the data now, and when the fix comes out Tuesday 7/14/20 the data entered will be ok, and you will not have to reenter or fix anything. After the fix is updated we will then be able to run all of our reports. This will allow us to at least keep processing data, keep up with our work load, and finish the reporting function later.