Hi Sneh,
Thank you for reaching out to us and we appreciate your patience.
Did you uncheck "Set Material Override Tab" option in the desing settings? If not then there is no need to subtract the deformed spiral from the substrate.
If you still want to subtract these two, then please send the screenshot of your model indicating the labels of every objects to help us serve you better.
All the very best,
Praneeth.
You are navigating away from the AIS Discovery experience