I realize my answer may be here but I thought I'd post the question just in case anyone knows. I have a very dense category structure and I want to avoid duplication. Ex:
Category A +-- Category C (unique) +-- Category D (contains 90 products) Category B +-- Category E (unique) +-- Category F (same 90 products as D)
In this way I might have 10 more categories with the exact same content as D and F. How can I get categories D and F to originate from the same place in the admin panel? i.e. if I make a change to D, I want that change reflected in F too.