If you maintain two copies of the same database, or portions of a database, and you make a change to one of those copies, you must make the same change in the other copy in order to see the same behavior in Detect. If you manually make identical changes to the databases using Detect, the two databases (or portions of the databases) are no longer considered to be identical, because every component does not have the same ID. Instead of making the changes manually, you can use the library management tools.