Is this possible?
e.g. simplest example I have: a book with imported/downloaded tags Animals, Horses is transformed by separate rules into Fiction.Animals, Fiction.Animals.Horses. I'd only like to keep the second tag.
Only way I can think of is to use (very frustrating) regexes that check for presence of both "animals" and "horses" to transform to the second tag but if the tags are processed separately it probably wouldn't work.
