This can happen sometimes, just try reloading it after you just did. And the passengers are not the only thing loading in, also the cargo is loaded in as expected. If this does not work try simply restarting your device or flight.
Check if you have deleted any standard airways fixes by mistake even though it shouldn’t be the case likely. I’m not that familiar with the airways that connects through atlantic so maybe take a look and view other flight plans and cross check. Also view pdf and see if the waypoints are there or not.