In version 7.81.1334.24:

Addressed in version 7.82.1514, patch 4
Download and install the latest patch, which contains all fixes from previous patches. If you are running an older version, download and install the latest version and then the patch.

In other versions:

    • On the Fields to Include tab of the mailing, note any fields that are missing from the Fields to Export (right) frame.

    • Locate the missing fields in the Available Fields (left) frame and move them to the Fields to Export frame.