manudo

I have been trying to figure out how to move flights from an aircraft with an expiring lease that I do not wish to renew to a similar aircraft I purchased as a replacement. I have not found an easy way to do this. If I delete all the routes from the old aircraft and start them anew with the new aircraft I lose my place in the market and do not have the same passenger numbers I had before. I know that you can go into the individual routes, click on all the flights in a route and move them but then you have to pay attention to where the new plane has been assigned before you can switch another route. E.G. if the old plane is flying LGA-MIA, MIA-ATL, and ATL-DFW, you have to switch the routes in that order. If you switch #1 then try to switch #3 the system will know the plane doesn't fly to ATL yet and won't let you switch to that plane. It gets even more complicated you have the plane flying all over creation.
Is there a way to switch ALL the routes in one easy step?