Template:ModIndexOverride
From GECK
If you are making a patch for a script that is using AuxVar functions, and that patch is an ESM/ESP, the ESM/ESP will overwritte the Mod Index of the AuxVar is attached to, and the original script will lose access to the AuxVar. So if another script within the master plugin is attempting to check the AuxVar, it will not be able to, as the Mod Index has now been overwritten.