have you checked POWL in following roles:
| /SAPSRM/OP_PURCHASER_ERPSRM | SAP SRM P2P: Operational Purchaser (ERP/SRM) |
| /SAPSRM/OP_PURCHASER_ERP_EHP1 | SAP SRM P2P: Operational Purchaser (ERP) - EHP1 |
| /SAPSRM/OP_PURCHASER_ERP | SAP SRM P2P: Operational Purchaser (ERP) |
They will list the ECC POs in SRM.
Also for the standard POWL applications to show ECC POs, please check tcode POWL_TYPE
Regards,
Sushil.