Multiple Domain Mapping
When the Multiple Domain Mapping plugin is activated and has mappings detected, you should see this notification appear in the Domain Mapping System settings area:
Notification to Import Mappings from Multiple Domain Mapping Plugin
The notification says:
We notice you are using the Multiple Domain Mapping plugin, one of our integration partners. Would you like to import your mapping configuration into Domain Mapping System?
If you select "Yes," the mapped paths detected in Multiple Domain Mapping will attempt to be imported by matching Post IDs with the paths.
If paths mapped in the Multiple Domain Mapping plugin cannot be matched to a published resource (any published post/page or custom post type), then either of these 2 errors will display:
If the mapped paths in the Multiple Domain Mapping plugin require the PRO version of Domain Mapping System, you will see this message on import: