So here is what I did to RESOLVE this situation currently (1/22/2022)
My original mission was to backup the company file on QuickBooks Online Account "A" and restore it to a new company file on QuickBooks Online Account "B".
After 2 days and about 8 hrs on the phone, I was told that a supervisor would be calling me back due to the DropBox and GMail Local backup not working and having disappearing times like @norstar and others in this thread. QuickBooks Support even told me that the backup would show up after 24hrs max, but that still has NOT happened.
I took the advice of @Fiat Lux - ASIA and went over to Rewind - https://app.rewind.com/users/sign_in and signed up for a 7-Day Trial. From there I added both QuickBooks Online Accounts to my Rewind Account (making sure that the company names were not exactly the same between the 2 QBO Accounts).
Rewind has a COPY function that will cost you $29 to copy data from 1 company file to another.
After the copy function is complete, Rewind will send you an email to alert you to any errors that may have happened during the copy operation.
My only errors were that the new company file named the Undeposited Funds account as 'Payments to deposit' instead of 'Undeposited Funds' (like all other QuickBooks installations have had that I'm familiar with). I had to enter 3 transactions manually that were listed in a CSV file provided by Rewind of the transactions that could not be copied.
Hope this helps anybody else that needs to get things working right now.
Intuit is definitely NOT intuitive .... LOL
