Basically the subject.
I have a simple product created with a particular attribute set. Is there a way to change the attribute set associated with this product without having to create a new one?
The attribute set reference is a column in the
catalog_product_entity table. Changing that should change the attribute set.
So if you want to do it by code:
If you want to do it from an admin interface you can give this extension a try. Even if it says it's compatible with CE 1.6.1, I used it with success on EE 1.12 (that is equivalent to CE 1.7).