PSA Requests not getting deleted after upgrade to 7.3

Hi ,

We recently migrated to BW.7.3 environment. Flows are in 3.5.After the upgrade PSA request  are not  getting deleted for export datasources(Generated Datasources Starts with 8) .I checked the below two posts but no use.

Change Log and PSA Variant does not delete the Change Log and PSA requests - Business Intelligence (BusinessObjects) - S…

Thanks,

Dharma