How to duplicate composition and subcompositions? I have a composition "A" with subcomposition "B". When one duplicates composition "A" to "A2", then both reference to the same subcomposition "B". I need that they reference independent subcompositions. How can I achive this?



This is what I tried 


I followed the instructions from 
                
            


clicked Ctrl+D to duplicate Layer A and B
selected copy B2 and reference B from A2, clicked Ctrl+Alt+/ to replace, but didnt work ( I have a german keyboard, maybe this shortcut doesn't work, because nothing happend.)



Also I simply tried to follow Copying All Settings Of One Composition in AE by just duplicating "B" to "B2" and inserting "B2" in "A2". However I also need that "B2" has the same transform and masksettings as "B" in composition "A2". If I select the transform settings, press Ctrl+C, click on reference "B2" and press Ctrl+V nothing happens. It seems that I can't copy the settings.

I am using Adobe After Effect 2015 CC
Make all your duplications in the Project Panel, not in the Layer/Timeline panels.

Duplicate Comp A

Duplicate Comp B

Double click Comp A2 to open it in the timeline.  It will still contain Comp B. We need to fix this.

Make sure Comp A2 is still open and visible in the timeline

Select Comp B 2 in the Project Panel

Select the Comp B layer in your Comp A 2 timeline

Hold down the option key on a mac (alt on a PC)

Drag Comp B 2 from your Project Panel over the top of Comp B in your timeline panel.

Let go of the dragging. 

Comp B in your timeline panel should now be replaced with Comp B 2.

This is a bit of a faff, but gets easier after you've done it a few times.