When working on a 411 site you might run into the situation where you save over a page and end up losing something vital. The page could already be published to a site and your customer/viewers are seeing bad data. In this case, you would want to be able to revert to the stable version ASAP. Fortunately, Umbraco has a very helpful feature called Rollback, where you can view every saved instance of a page and choose a specific version to revert the page back to. The feature also allows you to view and compare specific changes such as title, main text, etc.
If you want to Rollback a page with this feature, you just need to follow these steps:
Open up Umbraco and click the content tab.
Navigate the directory to the page you want to rollback.
Hover over the title of the page and right click the three dots that appear to the right.
In the panel that expands out, you will see a list of options including "rollback", click rollback.
This will refresh the panel and you should see a drop down box labeled "Rollback to". When you open the drop down, you will see a list of every version of that page and respective dates.
Choose the entry that you would like to revert to.
Right below the Rollback drop down box you should see a line labeled "View" and two radio buttons labeled "Diff" and "Html".
If you have no experience coding in html, you will want to click the "Diff" radio button.
You should see a table below with a list of page properties and their values. Anything that is highlighted in green, will be added to the reverted version, while anything Red and crossed out will be omitted. The main properties you will want to check are Name, and Main text.
Look over the list of changes and make sure the rollback is including and omitting what you want.
Click the green "Rollback" button located at the bottom right of that panel, and you are good to go.
NOTE: Every version of the saved page will be included in the drop down rollback list including new versions created by a rollback.