So I did a test. I manually moved the camera with the cam gui. The resume in BI is set for 10 seconds. After a minute still nothing.
Then I right clicked the camera in BI console and used the PTZ command to choose a PTZ preset I have not programmed (ie: PTZ 20). The camera didn't move but after my 10 seconds were up, resume worked and the camera went to the "night" position that it should.
If there was a way to send a "blank" ptz every 5 mins to the camera, this would solve my issue. Sledge hammer approach but it would work. I don't know of a way to do this within BI.