Buyer of on of our PO was terminated in the middle of the PO’s Workflow process and teh Workflow got stuck. We updated the Buyer to another active Buyer using "Mass Update of Purchasing Documents" and tried to rewind with NO SUCCESS. We then decided to reset teh PO to incomplete status using the Oracle recommended po reset script (poxrespo.sql - to reset Standard, Blanket, Planned and Contract purchase orders). Ehen Again Submitted for Approval it doesn't Trigger any Sub workflow s for approvals.
Please Advice if you have encounter similar issue with R12.1.3 Version.