Forum:Mass Effect 2 Ugrades bug

I'm having a pretty serious game breaking bug with the squad member upgrades. I completed Tali's loyalty quest, got her upgrade, and kept her as loyal, using the renegade option when legion and tali argue after legion's loyalty quest.

The bug is where Tali's squad member upgrade vanishes from the upgrades panel, I researched it and its gone. I only noticed this until after I picked her for the vents in the suicide mission. Her health depletes rapidly, faster than it should. Can't make it to the second switch without her health in the red.

The shield upgrade for the Normandy is alright, its there and nobody dies during the jump through the relay.

On an unrelated note, I do also have a save file bug. I save my game before hitting the Omega 4 Relay. I did it and for some reason, the save file reverted to a much earlier save, where I was doing the Overlord DLC. I even had a friend in the room who witnessed me save before hitting the omega relay, and then witnessing the save revert.