A portion of the expected data from the last collection in a Litigation Case is missing. A new collection has been created, but it will result in additional Active Directory custodians and exceed…

A portion of the expected data from the last collection in a Litigation Case is missing. A new collection has been created, but it will result in additional Active Directory custodians and exceed the collection license. In addition, an HR-Audit with multiple backups occurred during the case with a different set of Active Directory custodians. This is a historical case, but it will need to be retrieved occasionally. How can a new collection be run without exceeding current license capacity?