To prevent the risk of potential loss of work results, it is recommended to regularly save all changes in the project.
To save changes to the project, navigate to File | Save or click the 
button on the control panel.
You can also use the Ctrl + S hot key.
In the Fenix+ 3 application, you can set up autosave of the current project and specify the desired time interval at which the application saves changes. For more information, see General Settings.