Well that's the thing- the e-ticket they've sent me has segments 5-8 missing, these 4 flights are entirely AA, only two of which have been affected by the rerouting and AA are supposed to reissue.

My concern is that somehow the other 2 flights which have not been changed have been un- linked or cancelled by CX. Or does AA already have control of all their e-ticket coupons and I am worrying needlessly?

AA have said their coupons have been linked to the original e-ticket nos. but if the e-ticket doesn't exist anymore, will I have a Big Problem at check in?