I need to add an ESIB-8 to a Electra Elite IPK cabinet. It currently has one esib-8, a cot-4 and a sli-4. my question is do I need to power down the cabinet to add the card? and once the card is installed do I have to go to 7-1 to add it in programming? once that is done i figure i can go to 6-4 and copy current exts to the new required ports.