If you save a copy of a file that contains version information (by choosing File - Save As), the version information is not saved with the file.
Set the options for saving a new version of the document.
Save New Version
Saves the current state of the document as a new version. If you want, you can also enter comments in the Insert Version Comment dialogue before you save the new version.
Insert Version Comment
Enter a comment here when you are saving a new version. If you clicked Show to open this dialogue, you cannot edit the comment.
Always save version when closing
If you have made changes to your document, LibreOffice automatically saves a new version when you close the document.
If you save the document manually, do not change the document after saving, and then close, no new version will be created.
Lists the existing versions of the current document, the date and the time they were created, the author and the associated comments.
Opens the selected version in a read-only window.
Displays the entire comment for the selected version.
Deletes the selected version.
Compare the changes that were made in each version. If you want, you can Manage Changes.