After line 250, add this:
atcommand "@mapflag nomobloot 1";
atcommand "@mapflag nomvploot 1";
After line 379, add this:
atcommand "@mapflag nomobloot 0";
atcommand "@mapflag nomvploot 0";
^This will effectively remove and readd the 'noloot' mapflag from an instanced map.
Lol, came up with the cleanest answer to an 11 month old question X.x