It doesn't seem to work initially but, once you've reached the end of a thread, future visits (by simply clicking the thread in the threads list) will take you to the first unread post in that thread. I'm guessing in the transition they didn't import every user's "last read" post ID for every thread/user combination. So out of the gate seems like it doesn't work. Some users here said they marked everything read for an entire forum and so that took care of it but, obviously, that might inadvertently position them beyond some posts that they had not actually read.I take it there is no way to jump to the first unread post in a thread? That would be a big loss IMO.
@Memphis Foundry Please ignore if you already addressed this elsewhere. Thought I'd @ you here since multiple people have mentioned this. I know the new system is already adding data for which post each user last read in each thread but if it's still possible to import that data for threads we have not yet visited in the new system, that would be super helpful.