It looks like they did start BC, they do things in their own order. Doesn’t look like there are specific rules each case is uniqueMy timeline:
Application received: 30Aug 2018
AOR1: 20 Dec 2018
Medical request: 27 Dec 2018
Biometric enrolment letter: 28 Dec 2018
Sponsor Approval: 28 Dec 2018
Transfer to Ankar VO: 10 Jan 2019
PA from Iran.
In my Gckey account it said the "We are processing your background check....". it has been like this since I got AOR1. Shouldn't they start BC after the file transfer to Ankara? Is it a template sentence? Or they have already started my BC?