I’ve been using the EFB (tablet) to create and load flight plans. I can do so either before the flight or in the cockpit. Once flight plan is created I can easily “load to aircraft”. This seems to work reliably and is easier than entering data using panel mounted switch hardware.
Also, when entering a waypoint, you can select / confirm a the specific waypoint from a list. This seems to work OK.
I have run into issues when wanting to load an IFR approach and the approach doesn’t show up in the EFB flight plan build page. I know the approach is current / valid (present in Foreflight) but it’s not showing in MSFS 2024 data.
Good flying!