Open the projects folder, inside should be a folder "Resources" then inside "POU" then "Body" there you will find all the programs as .WPG files.
You can copy them to another GX Developer project, just paste in the exact same folder in the other project.
If you want to check the used addresses you can either look on one of the menus should be a "List of used devices and search the specific program". It will only show you one type of device at a time. If you want all types, just keep the single program in a project and then "Print" under the options should be used devices, it will give you a print out of all the various used devices.