Prior to Messaging Gateway 10.7.x an older (shorter) customer specific spam submitter ID format was used.
Working as expected.
Old format submitter IDs will operate as expected on systems which are upgraded.
Old format submitter IDs cannot be "re-registered" in new control center installations. In this case a new submitter ID should be registered.
Restoring a Control Center backup, which contains the old format submitter id in its configuration will work as expected.
New submitter ID requests return the new submitter ID format
The new submitter ID format can be "re-registered" on new Control Center installations.