Hey, sorry to be a downer but this is not a workaround for the problem and I wish QBO would stop suggesting it. Those two features have nothing to do with this issue. The vendors are being added via Online Banking Administration (check your audit logs to see the events as they occur). Can we please escalate this - it's been months of a pretty debilitating bug and there seems to be no urgency to fix something. Still have dozens upon dozens of unwanted vendors piled up in Inactive. Pretty disappointing support here.

My account opened the INV-83565 after countless days of trying to convince QBO support this was an issue.