Edit: did some research, passed candidate status has nothing to do with r10 completed, it is just a system note, not an officer/visa agent note.I called IRCC agent today as there was no update on my profile. The agent told me she saw a note: "passed (as) candidate" and also told me that she sent a note to the office to update my UCI. I am guessing that my R10 is unofficially passed and the UCI would be updated at a later date, like when MEP is passed as seen from other people.