Need help with Lathe tool

Hello all does anyone know how to fix the lathe after you validate it. I wanted to add more curves to the shape?

Couldn’t find an existing topic sorry in advance if there is!

After validating it, its locked as far as using the points to effect the shape. It becomes as any other part.

I typically make a copy of my lathe before validation and keep one in primitive form so I can go back and make changes if needed.

Thank you ! I was wondering if it was permanent when you validate lol