The MPNA is retrieved from Active Directory during Create events and when it is time for an event to calculate the best target path based on the MPNA and other policy leveling and distribution criteria. If the MPNA has not yet been populated (such as if the MPNA value is blank or the attribute doesn’t exist), the event will go pending until the MPNA has a value.
The Event Monitor watches for changes to the MPNA. When the attribute’s value changes, a Rename event is generated.
If you unlink a policy from an MPNA Action Block, and link it to a different MPNA Action Block, you will need to issue the Enforce Paths Management Action to enforce policy compliance.