UPDATE:
I called TT support again today... no Solution yet.
The support Rep said it is a known issue with no current solution. when i asked if there was a Bug logged, she said she didn't know... but that support Managers were aware of the issue.
As i was on the call i checked for updates, tt no updates still on version 023. 000. 0207
however, QB Premier 2021 had a critical update come through... it didn't bump the version, so we are still at 31.0.4016.0... is there a log someplace of what was updated?
end result is it didn't solve the issue... TT still fails to Import from QB2021
