You can end a relationship between two records. When you end a relationship, the MDM Hub inserts a new record version in the cross-reference table associated with the relationship base object. Also, the MDM Hub sets the deleted indicator for the record to -999999999 and updates the hub state indicator to deleted. The period start date of the new record version is set to the date on which you end the relationship.
If the record belongs to a state management override system, the period start date of the new record version is set to the date on which you end the relationship incremented by one timeline unit. For example, if the period end date is January 31, 2014, and the timeline granularity is one day, the period start date of the state management override system record version is February 1, 2014.