Hi there, this is an commonly known issue , known as ‘a double wapped’ component. You model a component inside a ‘wrapper’ , eg the .SKP file in which you’re modeling . By moving this file inside the component ‘drawer’ , you actually placed a new ‘drawer’ , which contained the component , inside the ‘componentdrawer’ ! if you look at the outliner hierarchy you can see where your component is hiding. To avoid this , you should make a workfile in wich you model all components you need and give them the proper names etc. and then , in the component tray, select ‘in model’ ( litlle house- icon ) then click the little details icon in the components tray and select ‘Save as Collection’ This way , SketchUp will put the components bare naked in the component drawer.
You can add the ‘drawer’ or collection to your favorites for quick acces
Btw: best to purge model before save as collection