Remove the "Import with _hi" option and instead always look for a _hi file. If it exists, import it.
Also, if the user tries to import the _hi directly either show an error saying to import the normal model, or look for the non-hi file first and import that + _hi instead.
Remove the "Import with _hi" option and instead always look for a _hi file. If it exists, import it.
Also, if the user tries to import the _hi directly either show an error saying to import the normal model, or look for the non-hi file first and import that + _hi instead.