[Koha] Updating issueing rules?

Hi all, I am working with Koha 2.2.6 on Debian, it all works fine, however, I had to change the issueing rules, I modified the maximum number of items a patron can take out for certain itemtypes, but it seems to make no difference whatsoever. Is there anything else I have to do besides saving my changes on the issueing rules page? Any help will be appreciated, Thanks, Marty J.