Is there a way to view the previous versions of a saved document?

The user for Polaris Office Cloud can track down version history and the file should be saved in My Polaris Drive.
(Polaris Office doesn't support version history function at Polaris Office lifetime, Polaris Office Mobile)

Version history are created when a document is saved. When version is selected for preview, options are available to restore or download it as a new document.

[How to view version history]

1. Go ahead Polaris Office home page: https://polarisoffice.com/en
2. After sign in, right-click the desired document in the 'My Polaris Drive' document list and select 'Version history'.
3. After selecting a document of the desired date, you can restore and download it.

※ Version history are available only for a certain duration of time and the period may differ according to each account type.
When version duration is past, it will no longer be available for viewing. For information on version duration, follow the link below.
www.polarisoffice.com/free-office/price