Sometimes people get back to us claiming that whenever they change something in their restored site, the original site changes as well and vice versa. The problem is a small, but important, oversight when restoring the site.
During the restoration you are presented with your database connection information. By default, ANGIE displays the parameters pertaining to your original (old, backed up) web site if it believes that your site's URL and absolute location on disk are the same as those on the backed up site. Otherwise it shows you nothing there, expecting you to enter the connection information to a different database.
Unfortunately, some users get confused and believe that they need to enter the database information from the site they backed up. This is wrong. It will cause both the original and the restored site to use the same database data, meaning that changing one will change the other with unpredictable results.
You will need to restart the restoration of your site. Before doing that please create a new database. If that is not possible, for example your host limits the number of databases you can create, please use a different database table naming prefix in ANGIE. This will allow the restored site to use a different set of tables than the backed up site and the two sites will no longer be entangled.