Currently flying the Pilot's Dash 7 from KJFK to KBOS , IFR for an ILS into 33L.

I am using the Dash 7 TDS GPS in the cockpit & somehow the PMS is on the drop down menu bar at the top of the screen. (Not sure how it got there)

The TDS is controlling the flight on NAV AP.

I have found when I set up the ILS flight in MSFS Scenario that the PMS imports the full flight plan & shows all of it, whereas the TDS just imports the departure airport & I have to enter all the waypoints if I want to see the correct flight plan.

Is there a setting in the TDS whereby it will import the full MSFS flight plan, from start to finish?

T45

No, the TDS can not read the MSFS flight plan. The only way to avoid manually entering the entire flight plan would be to create one using SimBrief or Little Navmap and then export the .gfp file to ProgramData\TDS\GTNXi\FPL. Now you can import the flight plan into the GTN. Keep in mind that two GTNs can't communicate either so you'll need to import the plan into each unit separately.