Remote Desktop Manager can manage .rdp file to open and connect sessions immediately. Even if your application is closed, you can open a .rdp file. The application will open and start your connection.
Remote Desktop Manager installation wizard
When deploying an installation of Remote Desktop Manager, you will be able to associate your .rdp file to the application, allowing you to start an .rdp file from your computer to be opened inside Remote Desktop Manager.
If an .rdp file is launched, the session will start in Remote Desktop Manager. You can then create a new entry with this session by simply clicking on save session as from the edit section of the Actions tab.