Have a fixture at a level in a cue, Priority 4
Have an HTP sub priority 4 with that same fixture active at a level.
Take that sub out with <Sub> [x] <Out>. Fixture goes to cue level.
Raise the sub priority level to 5, Fixture is put to 0 by the sub.
<Sub> [x] <at> [0] <Enter> behaves as expected, allowing the lower priority cue to give the fixture its value.
I've noticed that <Out> is fundamentally different than <at> [0], as Out brings intensities to home values rather than zero. Is this on purpose, and should Out not be used for things such as subs?