You can move a map between two projects using the Map Details options.
1. Navigate to the map you want to move
2. Open Map Details by clicking the carrot next to Map in the left panel
3. Scroll to the bottom of the left panel to "Move Map To Project"
4. Click this to list out projects within 5km
Note: Only projects within 5km of the current project will appear in this list. To move to a project that is not listed, please contact support@dronedeploy.com
5. Confirm, and that map will now appear in the chosen destination project