A new Mapping Set can be created by reversing an already available Mapping Set by selecting the Reverse mappings...
menu item available within the Context Menu of the Mapping Set Navigator. Only (active and inactive) mappings with both source and target codes specified are reversed and added to the new Mapping Set.
The name field is pre-populated with the naming pattern: OriginalMappingSetName_reversed
The pre-populated name can be modified.
Clicking Finish
in the wizard will generate the new Mapping Set, which will be listed in the Mapping Set View.