This is my third world in AirwaySim, I'm getting messages telling me that I will lose some slots on my Beirut-Paris route if I don't start using them. They are actively on my schedule, they are showing up for the assigned aircraft, and the route is generating revenue. It doesn't come up when I look for "routes not being used" and I've even removed and then rescheduled the route. Am I doing something wrong? I can't figure out why I keep getting the warnings and am worried that I'll lose the slots and have to purchase them again. Thanks for he help.