Conquest Bug with Imp Troopers Boss

I know this is a bug that has been around for a long time. Dark Trooper bugs the PVE instance for conquest (and other stuff) and the game gets stuck. I'm using GG team for dark side objective.

What was the work around for this one? Three attempts and i can't remember.....Something about airplane mode and off or something. Unfortunately, I'm on a PC and don't know what to do.

It would be nice if CG could fix these bugs that have been around for so, so long, but I know that is too much to ask. Thanks for any help.