Thanks for the reply. My old save is from 0.5.5, and I had played for a while after the encounter in the sewers, so there is no replaying it. For one, too much in-game time has passed, but mostly because I really liked that blind playthrough experience and do not want to undo it.
But yeah, in the end, it had become pretty troublesome to progress, so for the newest version, I was contemplating whether I should just start a new game or continue from where I left off.