# Unable to open MSFS flightplan .PLN **URL:** \ **Category:** General MSFS Data\ **Created:** [June 22, 2021, 12:09pm UTC](https://forum.navigraph.com/t/unable-to-open-msfs-flightplan-pln/5378 "2021-06-22T12:09:11Z")\ **Posts on this page:** 1\ **Showing post:** 11
**Author:** ![skysail](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.navigraph.com/skysail/32/304_2.png) [@skysail](https://forum.navigraph.com/u/skysail)\ **Post date:** [June 23, 2021, 12:24pm UTC](https://forum.navigraph.com/t/unable-to-open-msfs-flightplan-pln/5378/11 "2021-06-23T12:24:49Z")
Yes, we are aware of this and unfortunately there is nothing we can do about it. This is because the simulator automatically re-calculates **the whole route** as soon as you change any of its parameters in the world map. Please see these posts for further reference: > [@16. Export Flight Plans from Navigraph Charts to Microsoft Flight Simulator 2020](https://forum.navigraph.com/t/16-export-flight-plans-from-navigraph-charts-to-microsoft-flight-simulator-2020/106): > > [@Problems with flightplans](https://forum.navigraph.com/t/problems-with-flightplans/4270/2): > > Hello Michel! Welcome to the forum. How are you loading the flightplan into MSFS2020? If you’re exporting the file from Navigraph Charts to the simulator using a .pln file, you need to make sure not to change any parameters once the flightplan has been loaded. This includes changing the approach/runway, gate, etc through the planning interface inside the simulator. The reason for this is that the simulator automatically re-calculates the whole route using its own route calculator upon any chan… Kind Regards, Malte --- _[View the full topic](https://forum.navigraph.com/t/unable-to-open-msfs-flightplan-pln/5378)._