What happens to PRs generated from Maintenance Orders once status is changed from REL to TECO

The Issue
When we change the Maintenance Order status to REL, a PR will be generated.
When we change the Maintenance Order status to TECO, the PRs will automatically have a deletion flag set to it.
So who controls PR in this case? PM or MM?

The Solution
Now the scenario is between Plant Maintenance and Materials Management. What you are saying is, when a PM Order with PM02/PM03 is control key is created, it will create a Purchase Requisition.
This is correct and in this case, the direct owner or controller is the Plant Maintenance Order itself. If you notice, when you release the Order, then only the PR is generated? And when you Teco the Order, the PR line items are automatically deleted? This is to prevent future creation of Purchase Orders based on PR when the Order is already closed.

For cases like these, involving both PM and MM, the owner is the Order, you cannot do the changes in PR. You have to do the changes in the Order. By doing so, the PR will be updated automatically.

If you Un-Teco the PM Order, the PR line items will be UN-deleted. They will be open again if PO has not been created against the PR line item yet.