Hey,
I had the same as you today. I'm AOR June 6.
I checked as I do every morning and it said updated, but I couldn't see any changes. 10 days ago I had to send a copy of my wife's Hukou (Chinese form of ID) and complete a Schedule 4 form which seems more applicable to background than eligibility to me. I have a suspicion that my background check had returned to in progress, but was had not been showing that. But it still says "Not Applicable" again, so maybe it was updated to in progress and then back to NA and both changes cancelled each other out, but still showed as "updated". I hope that's the case, because that'd mean PPR is close, hope I'm right. Maybe that's what happened to you?
Good luck!