Originally Posted by
hfnole
I have a MIA-MAD-DOH-CAI flight sold by Qatar Airways. The MIA-MAD portion is operated by AA. MAD-DOH-CAI is operated by Qatar Airways. I am not planing on taking the MAD-DOH flight. ...
I assuming this is a one way. If you don't fly MAD-DOH the rest of the ticket will be canceled.
As for the checked/bags/earning, the experts here have covered it already.