Can the reserve capacity sequence nbr captured on the STDNT_ENRL table be modified?

PeopleSoft Campus Solutions 9.2

Hello, we have a bit of a mystery. As expected, when a student enrolls in a course that has active reserve capacities, the Reserve Capacity Sequence number (RSRV_CAP_NBR) for the group that the student satisfied is captured on the STDNT_ENRL table. This typically is only captured for Enrolled students; it does not normally get captured for students who join the waitlist for the course. The issue we're running into is that the reserve capacity sequence is captured on the STDNT_ENRL table at random for students in a Waiting status. We suspect that behind-the-scenes the system is counting these waitlisted students