It's too complicated too explain why I would want to do this but: I have a round trip ticket Cairo-New York City- Cairo on Royal Air Maroc through Casablanca, where I need to get my connection to New York City and then from Casablanca to Cairo. It's an Apex ticket. I would like to use only the Cairo to Casa and Casa to Cairo portions, and not use the transatlantic portions. (Yes, strange). I know that reimbursement for the unused portions is impossible. However, after I've used the Cairo to Casa portion (but not the transatlantic portions), would I be able to use the Casa to Cairo portion without any problem? Should I inform Royal Air Maroc? Thank you.