Looks like a recent trend that they started sending people whose secondary office is Mississauga to Scarborough for test, and sending people who did test in Scarborough to do oath in Mississauga - interesting, hopefully this will soon reach usI should also note that I sent a webform query last week asking speedy process as my spouse is pregnant. Didn't get a response for that, but got invite.
As per gcms from June, my office was Mississauga. But test invite is from Scarborough.