The issue: you post a review request with a different set of target

people or groups than are in your .reviewboardrc. When you then update

this existing review request, if you don't re-specify your custom

people/groups, then rbt will overwrite your custom choices with the ones

specified in your .reviewboardrc.
With this change, rbt post will use the options in the .reviewboardrc

only when creating a new review request. If you are updating an existing

request, then it will ignore the settings in the .reviewboardrc. You can

still manually change the groups/people in your update if you would

like. Unit tests show this functionality.

Been using this at work successfully.

Manually walked through all the posting options.

Unit tests should cover each case.