I appreciate you for joining in on this discussion, sooverit2.

I understand the urgency of resolving the issue about QuickBooks Online (QBO) adding vendors automatically when syncing your bank feeds. Let me provide the details of why you're experiencing this.

I've checked my resources and confirmed an ongoing investigation (INV-8365) related to this issue. The team has already begun the initial case analysis and is working hard to provide a resolution. In the meantime, I recommend contacting support. I understand you've already reached out to them, but you'll have to get in touch again so they can add you to the list of affected users. This way, you can receive email updates on the status of the in-progress investigation.

Additionally, here's an article if you want to review transactions and put them in the appropriate accounts: Categorize and match online bank transactions in QuickBooks Online. This way, it looks for and tries to match transactions with the ones you've entered in QBO to avoid duplicates.

Feel free to reply below if you have further questions about the investigation. We're always around to attend to your queries. Keep safe.