I understand the importance of fixing the banking error 106 in QuickBooks Online, @DanP2. I'm here to provide an update about the case.

When I looked up the error investigation in our database, I found that it is still in progress. Rest assured, our product developers are working on fixing it as soon as possible. 

I'd also advise contacting our Customer Support department, as my colleague mentioned. This enables them to investigate this issue further and offer you the best solution to your problem. They're also able to add your account to the list of affected users. 

Once added, you'll receive an email update about the progress of the investigation.

Feel free to check out this guide about manually uploading bank transactions. You can use it as an alternative when adding transactions to QBO.

Please let us know if you have other queries about banking or QuickBooks. The Community is available 24/7 to assist. Take care!