The Circuit keeps progress until mission leave/fail.

[(XBOX)ZskyGuardian180]

I know many players have lost countless hours because of a bug such as soft-locking, game crash, or destroyed Defense objective (most simply leave once they see that the next objective is Defense) deep into Steel Path Circuit sessions. I never bother going past tier 5 as it takes even longer to level up coupled with the fact I could spend ages doing them only for everyone in my game to lose all progress.

Changing The Circuit to at least keep your tier Progress would be huge.

[Skazon]

Yes please. Especially since the rest of Duviri already operates on a system of saving all your acquisitions every time you pick up a decree. Why doesn't the Circus operate on the same principal? 

Also just remove the defence (and excavate) from it entirely because it is just bad gameplay to have an object that can be killed in an instant from anywhere on the map.