Thank you all for your replies so far - as you can see, it's a bit of a grey area issue. A few points for clarification -
The CSPs would not be copies of the defunct council's CSPs, but rather patches with new art bearing the name of the old council.
As to who would give permission, I would assume it'd be the current council, since they currently control the territory once covered by the defunct council in question. I suppose the main issue would be A) do we need the current council's permission, B) or is it just a matter of Scout spirit/courtesy?
Also, would it be legal to use t