I'm having trouble transferring uranium between parts, or rather I can't transfer it at all. Help?
I wanted to drain the unused fuel from a used interplanetary stage's nuclear engines to a container, but I didn't get a prompt for any sort of transfer. I had a lvl 3 engineer on board, brought up a lvl 4, then cheated in a lvl 5 but still no prompt for any transfer in or out of EVA. Neither from a full container to an empty. All parts are cold enough.
Works fine in my sandbox save on a test rig though? I'm stumped, tried everything I can think of.
NFE version 1.2.3 on KSP version 1.12.5.