Remove Link behavior doesn't remove link information from Child Lookup field
This article provides a resolution to solve the issue that the Remove Link feature can't delete the link information from Child Lookup field in Microsoft Dynamics CRM.
Applies to: Microsoft Dynamics CRM
Original KB number: 2412330
Symptoms
When you have a 1:N relationship and set the Remove Link cascade option for the Delete under Relationship Behavior, the link information in the lookup of the child record still exists after you delete the parent record. When you select the link in the child record, you receive an error that the parent record does not exist.
Cause
The link information will be deleted by the Deletion Service, it is not removed real time.
Resolution
Wait until Deletion Service runs. By default, it runs every 24 hours. The Deletion Service will remove the link information.