If two users edit a page and their changes threaten to overwrite each other, Telligent Community gives you a way to view the other user's changes or overwrite them.
View the other user's changes
If the page you are editing has been updated since you started editing it and you attempt to save, you will receive a message notifying you that it's been changed and identify the user who made the change. You then have the option to overwrite the changes by clicking Overwrite or to View changes. View changes will open a new, separate window showing what was deleted or added in their version. If you want to let their changes remain, you can elect not to overwrite.
Overwrite another user's changes
Choosing the overwrite option will make your revision the current published version and will make the other user's version a previously saved revision.