The same thing happened to me, I'm not sure why. Eligibility went in process about 3 weeks before and BGC went in process about 1 week before my file was transferred to LVO...I got the AOR2 today from LVO which doesn't seem normal because BGC started before app got transferred.
"This message is being sent to confirm that the Application for Permanent Residence for your relative(s) has been forwarded to the visa office in London for further processing."
SA: May 11th
BGC started: July 27th
ECAS updated to "In Process": July 29th
AOR2: July 31st
This doesn't seem normal, has this happened to anyone else?