[rules-users] Changing DSL in BRMS

Hi, I have a DSL defined in BRMS that says for example.. [when]The cat sat on the mat=Object(moose) and then loads of rules defined that are using that DSL.. Now the business wants to change the words so that the DSL reads [when]The dog sat on the mat=Object(moose) That is easy to do, as I just edit the DSL.. but none of the rules change... and there are lots of them... now all the rules fail validation How can I search and replace the DSL in the rules? Cheers Ric