Yes you need to change your script. Likely, or might I say hopefully, you have the name of the CSQ set in a variable, or even a parameter. The later is a variable that you can change from the application configuration, so you don’t need to modify the script.
That XML file is something specific to your system, it’s not something that is normally used. Possibly you’re using the XML to map trigger numbers to the CSQ, but without more information it’s just a guess. But if so, given that you still have the same trigger number, you could probably change the XML to reflect the new name of the CSQ and the script will pick up the information at runtime. You can run a reactive debug on the script to see what happens when a call comes in.