MyMoodle showing posts to grouped ForumNGs

We just switched over to ForumNG (3.7, Moodle 1.97).  We use groupings to have separate forums for our faculty departments within a larger faculty "course."  So, for example, an English teacher doesn't see activity in the Math Department forum.  What's happening is that people are being notified (on MyMoodle) of new posts in any of the ForumNGs-- even ones attached to groupings that they don't belong to.  When we used standard forums, people would only be notified of activity on the forums belonging to their groups.  Is this fix-able?

Thanks in advance.