Because even if someone duplicates a GO all rules must be new, so what is the meaning of duplicating?
No they don't all have to be new rules.
Only if you want that rule to do something different like a different colour or fill type.
For example I have a rule that simply turns all zones transparent as I don't want to see them on my plans.
So I have a GO combination called "Zones - transparent" with just this one rule.
I use this for my floor plans and my electrical plans - same plans just different layers - I don't want to see zone colours in either of them.
Now I wanted to hide certain objects I didn't need to see on the electrical plan but because of the layer they are in they will have to show.
Rather than setting up a new layer, moving objects to that layer and changing my layer combinations, I simply duplicated the GO combination used in my electrical plan view.
I added a new rule that said find certain objects by name and override them with white pens.
I then apply that new GO combination to my electrical plan views.
So my new GO combination has one old rule - the same one used in other combinations as well and also one new rule.
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