Are you sure long range missiles are guided by AWACS? If I am not wrong till date AWACS don't provide any type of guidance to AAMs especially the ones Pakistan have, their job is provide early warning of presence of enemy fighters and not guidance.
The technology for missile guidance from AWACS is nascent and is being developed now and only a few are capable and Pakistan doesn't have one...
The main issue is the linking of a Swedish AWACS with a Chinese missile. It's not likely for these two to be integrated.