update new rules from new serc update

we have all rules mapped for the current serc 2014 . Now with the 2015 serc updates how do I know which rules has been updates/changed/introduced and update in the server and expert admin and in cgsdam . DO I need to delete all the existing ones from all these places and reconfigure everything one by one ? what is the best and optimal way to do this ?

also how Do i know which databse needs to be updated and replaced ?

k g