Replacing links for Variables, Functions and Screens

Replacing links for Variables, Functions and Screens

Hello,
I have made a project in which the name of variables, functions and screens starts with SS440-XXXXX. This project is for Substation 440.
We are using IEC61850 driver.
Now I have to make another project for Substation 450. Both of these substations are identical.I want to avoid remapping, creating new functions and screens.So in this project all the variables,functions and screens should have name SS450-XXXXX.
For variables I exported all of them in CSV and replaced SS440 by SS450.
I tried to replace the same for functions and screens using XML editor, but the XML file for screens is so large that it is unable to complete the link replacement.
Could you please advise me any simple procedure so that I can replace the links for variables, screens and functions easily and avoid remapping?
Let me know if anything confusing in the above explanation.
Thanks

This is a migrated post! Originally posted on 10.01.2013 by user salmanhassan2. Please be aware that information can be outdated.