I've upgraded Parallels Plesk Panel (Plesk) 9.5 to version 11.5 within Parallels Business Automation - Standard (PBA-S). Now I see that all Plesk clients associated with PBA-S subscriptions were converted to resellers. Why?
This is by design. Since Plesk 10.1 and PBA-S 4.0 provisioning logic has been changed. Refer to this KB article for more detail: