I recently read someone arguing that the whole tradition of Bhangra representing farmers steps, etc. is in fact a myth. I'll see if I can find the source. His argument was that Bhangra, as we now know it, is an amalgamation of many dances (which we already knew), and it was really formed in 'refugee' camps after Separation with many different peoples passing time and teaching each other their individual regional steps. So some steps may represent farming, but for the most part Bhangra is just a hash of dances from the different areas.
I know we've discussed history of Bhangra before, but a search didnt' bring up the thread I was thinking about.