A few questions:
When changing access-lists on a PIX from command line, can you change one line in the list, or do you have to remove the entire existing list and re-enter the changed list?
On a crypto map, say the peer changes and you need to make that change, can you change one line in the crypto map, or does the entire map need to be re-entered with this change?
Also same question for object group?
Can you add one line?
And will this affect any existing connections if it were a port objexct group?