# 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. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.phoenixlidar.com/flightplanner/faqs.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.