How do I change the export mapping?

In 99% of cases, export mapping is done automatically and doesn’t require any modification. The only condition is that you use it early (in import.mapping of our "Internal elements"). 

If you still need to modify the mapping, you can do this by modifying the content of the "Mapped elements" section.

Just "unlink" the mapped field and drag and drop a new one in its place. Then click “Save”. Remember that for mapping you should use the fields that are not crossed out (2).