I was just able to resolve this by fast traveling from the Meditation point to The Archives and back!
Hopefully you can get yours un-softlocked, too!
For anyone attempting the solution, please note that I had already tried warping to another location (I don't remember which one at this stage) attempting to fix the issue and it did not work. I'm guessing because the location I used was still within render distance/ram allocation. So, as the solution suggests, make sure its the archives that you fast travel to, just in case it is only that location that works. Also, talk to Cere (anyone really), it may do nothing, but it might help having an interaction with the archives environment just to say to the game, yup I'm here, load this content, not content at the bridge.
This also worked for me who had an issue where even the first time I saw Merrin there was no imperial patrol when she said there was.
