When configuring an integration between Aha! and a development tool, you decide what records in Aha! map to what records in the development tool and map the individual fields.
It's common to have multiple record types in a development system at the same level in the hierarchy -- (ex. Tasks, Stories, Bugs, etc.) -- that all need linked. Many times these types have the same or very similar field mappings.
It would speed up the integration process to be able to "copy" the record mappings from one record type to others at that same level.
This is especially helpful for fields that have options associated to them (status, multi-selects, etc.) which takes awhile to map.