When encrypting a file, only the last version of this files will be encrypted. All other versions will be deleted.
How to encrypt a file:
Warning: When encrypting a file, all versions of this file will be deleted, except for the current version. If you need to keep an older version, save it before encrypting the file.
Select one or several files in the in the display area of the Drive app.
Use one of the following methods:
Click theicon in the toolbar. Click on in the menu.
Selectfrom the context menu.
Use theicon in the Viewer. Click on in the menu.
Parent topic: Encrypting or Decrypting Files