Planning file entry and purchase orders

Hi all:

The documentation for MRP planning states that the planning file entry is updated for relevant changes to the material that includes among other things creation of purchase orders for the material.

In our system, MRP requisition creation does update table MDVM as part of the MRP run. However, purchase order creation does not update the planning file entry, even though the documentation says it should.

Anyone ever encounter this? Are there controls that need to be set?

thanks in advance

weston