Hi there i have done some extensive testing yesterday with a buddy and i can confirm the following:
It is to note that in all the testing mentioned below we i had my radar on silent ensuring that the input of the target is coming from datalink.
You can lock and launch an Aim120 on a MSI only track however as mentioned in the changelog you might visualize some desync pretty regularly. We have tested using both tracks coming from AWACS and in other instances we have tried using only fighter to fighter datalink and in both cases it works meaning good launch good track and a good hit.
However there are plenty of issues that have been caused in the radar for example now by using NWS in the TWS mode i have verified that it appears like the target switch happens but immediately snaps back meaning you can go from target with priority as 1 to 2 but it kinda glitches and throws you back to the 1. Other isssue i have noted for example when you perform soft/SAM lock on a target in RWS mode you cant proceed to unlock it with NWS.
And this issue is very evident when you try to for example perform a msi lock on a target that is located outside your radar sweep you get a successful lock but when you proceed to unlock it you can't which is pretty annoying.
But overall its a very cool feature added and in near future the issues will be resolved most likely.