it's probably a very basic question, but i have never done it. we are changing ISP's and all of the NAT configurations have to change on my ASA 5520. So instead of going through each button and option on the ASDM GUI- i thought it would be faster to do a "find and replace" in a text file that i've copied out from the "show run" command on my 5520ASA. Just would like to know that if i intend on copying that back into the config, shoud that be as easy as it sounds? Can i simply remove lines of config that are no longer in use? Can i remove IPSEC tunnels if they are no longer in use by cutting it out of the text file? I just want to make sure that i'm doing that right thing.