Not sure what you have in your camper, here's the manual for the one in mine:
Click here.Go to page 2, see the diagram. The configuration may help you figure out how to by-pass the TS. I would think, just unplug the TS from the inverter, and plug your camper into your generator. The "converter" in the camper should power all your DC and AC power needs, except maybe the air conditioner and microwave at the same time.