I suspect that the PVO delete has to have something to do with the 7.2 Provisioning Framework as the whole provisioning runs on pending values plus the HCM-integration creates PVOs on future attribute values send by HCM.
Were you after any specific PVOs? If it's just provisioning then the link-tables in 7.2 are big improvement and you can detect the pending privilege/role-assignments or failed provisioning from the link-tables.
regards, Tero
