Mission commands become "Unknown" after uploading Fence

Beta mission planner supports uploading/downloading Fences in a similar way to how mission commands are uploaded/downloaded. I found though that the mission command's become unknown if these steps are followed:

1. use the flight-plan screen to upload a mission
2. use the flight-plan screen to upload a geofence and press the "Write WPs" button
3. set the top-right drop-down back from Fence to Mission. At this point the commands all changed to "Unknown"

Reproduce the issue in the flight-plan screen by uploading a mission, switching to Fence, pressing "Write WPs," and switching back to Mission. Compare the mission commands before and after the Fence upload; done means the commands remain recognized instead of becoming "Unknown."

Written by the indexing model from the issue text.