Add Investment Category to the Rally integration

We have an integration setup with Rally, which is working very well.  Right now I am managing our investment categories via the Aha type field on every feature.  Rally has an Investment Category field on each feature as well, but that field is not offered through the integration.  I would like to automatically sync these two field through the integration.  It's not a huge effort to keep on top of, but it's one of the last items we're stuck manually managing between the two systems.