I really enjoyed this game before the reset of the Laurion mining wing progress. I've played a few times since and find it impossible to make progress in the Laurion mining wing or travel to Strabos because it seems all of my prior progress has been wiped in these areas. It was a mistake to remove prior progress; if I wanted to start over to experience the new plotline, I could start a new save.
Assuming you're playing v0.6.1.16, and depending how exactly you're struggling to make progress in the mining wing, you may have been suffering from the bug fixed by .17.
Unfortunately, it wasn't really practical to carry over progress from the old obelisk, since it leads to new content in most of the existing facilities, much of which will continue to be relevant into new facilities. So if players weren't sent through the new content, they'd be lost and confused when it came to using that content in future.
The mining wing is the only location that progress was wiped though. Nothing in Strabo or any other facility was affected.