Products and accessories can be disabled in the Database, so they aren’t displayed in the catalog (see Database Item Properties). However, if you open a project which contains disabled items, these are loaded and display on your bays because they still exist in the database.
You can visually identify the disabled items in the current project as follows:
Note: If you disable items in the database while they are in the currently opened project, the disabled items will only be highlighted when you reload the project.