Without knowing the old script or how it’s been modified from the original Saratoga scripts then I don’t think anyone could give you that assurance.
A couple of possible alternative approaches might be:
- Make a copy of the current pages into another directory and then try upgrading the copy to see how it goes. If it breaks badly you can just delete it.
- Create a new clean copy of the Saratoga template on your server and then migrate any data from the current pages to the new instance.
Unfortnuately I don’t use the Saratoga scripts but hopefully someone else might be able to help with how to achieve these approaches.