Noted differences between the valkyrie and base SRTS vehicles.
Base vehicles have a Set to load" button
valkyrie has a "load launch group"
the latter of which ( at least in my modlist) doesnt seem to work (empty inventory screens, no pawns or items selectable) pawns also have the "enter ship" option in the rightclick menue greyed out with "not allowed"

since Basemode SRTS vehicles have no such issues, my theory is that SRTS may have changed something along the way through the updates that the Valkyrie mod is missing.

would be awesome if you could bring the valkyrie to function the same way as the SRTS vehicles so it doesnt conflict with whatever is causeing this issue.

thnak you for your consideration :)

I somehow have this Valkyrie in my game despite somehow not having been subscribed to the mod which made it very interesting when my Pilot never returned from a carpet bombing and started starving in the cockpit

Emperor bless you