So, first I wasted 10 T tech parts because I couldn't solo farm Juggernaut Warbots for the other item that is needed to complete the mission before the timer ran out and it dropped.

That's fine. Really annoying because I had to spend another day farming tech parts, but it's workable.

Then I attempted the next mission and got killed by the High Priest after turning over the blueprint to him. There was no one around to poke me up in time, so the mission dropped.
I was able to go back and kill him, but now there is no way to progress the mission because I don't have the blueprint.

I made a support ticket, but all I got was the usual Reakktor's policy of not restoring lost items, so I guess I have to roll a new character to try the mission again?