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Yes our family got a ghost update as well-Scarborough office-test completed in July-waiting for LPP
 
Me and my husband too (July 2023 application).

Mississauga office, waiting for LPP to be completed (test taken on Oct 13th and updated on tracker on Oct 18th)
 
I got the ghost update today. Niagara Falls office. Nothing since March 22. :(
 
My LPP was completed last week, oath still not started. Got GU today and I called ircc and they said my oath has been scheduled on Nov 7, but it still shows not started on tracker.