It is a good practice to save your work occasionally to prevent a loss before completion, options to save files are available on the Files tab.
To save your work use one the options below:
Save to save the active file to a local drive manually
Save to save the active file to a local drive manually under a different name
Save File As Translated to save the translated file to a local drive
A pop-up progress bar appears and upon completion, you will find the saved file on a local drive.