Hi Eric
you have used the same groups for drawers 2 & 3, if you click into the attributes of say drawer 2 side, you will find that it is red , it refers to drawer 1, You need to change the reference of the group, if they were components then you would have to make them unique.
since its most likely you want to reuse certain elements again rather than making each unique or updating the reference, replace the reference with parent! instead of the parent name, then the "child" refers to any parent rather than any specific one.
This is they important when you want to swap components, say a door type, or knob.
Cheers
Philip