I honestly don't know the answer to that.
I doubt anyone has the answer. Elal might not have even discussed this yet.
I can't imagine they wouldn't manually reissue the infant ticket. I guess we should know by Monday.
Does LY also save paying the OTAs when you switch to non-stop? If they process it as a cancelled ticket+reissue (maybe even switch PNRs) they might get a way with it. Then again, they probably don't wanna piss them off