Mavic 3T - Route/Mission Planning

I am looking to buy the Mavic 3T for ecological surveys. However, I know drone deploy does not currently offer support for the flights of the Mavic 3T.

Does anyone know if it is possible to use shapefiles/kmls to plot routes for the Mavic 3T and have the drone follow these using the DJI app? As have to use custom GPS coordinates and can’t use the map to plot it.

Thanks!

From Pilot App FAQ’s.

The DJI Pilot 2 App supports importing polygon boundaries and waypoint missions for pre-planned aerial photography with KML/KMZ files. Import path: Route > KMZ Import > Select Table of Contents > Internal Storage/SD Card > Locate the KML/KMZ file.