Originally Posted by
ISTFlyer
Yes, you would be able to retroclaim that flight to BAEC and get the Tier Points and BA Avios if QR didn't credit the respective Qpoints or QR Avios.
You could try the "Claim Missing Avios" tool on BA.com for that.
I had the same situation (QR booking/ticket number, first leg operated by BA) and submitted a missing Avios claim on ba.com for the missing BA-operated leg.
This was in June. Status is still "submitted".