> For the complete documentation index, see [llms.txt](https://docs.phoenixlidar.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.phoenixlidar.com/flightplanner/faqs.md).

# FAQs

## Why does the mission type keep changing when we upload our KMZ/KML file?

FlightPlanner will set the mission type to Corridor mode if you upload a *polyline* KMZ and will default to Mapping Mode if you upload a *polygon* KMZ. 

## What is Corridor Mode and how does it differ from Mapping Mode?

Corridor mode allows you to plan a flight for a long and narrow area of interest such as a highway or railroad. It differs from the original Mapping Mode as you do not outline a polygon when using the planner. Instead, you select points along the corridor in a line and then adjust the corridor width accordingly to cover the desired area of interest. Refer to [Corridor Mode](/flightplanner/workflow/settings.md) for more information.