Gear setup not saving!

United States
So after nerding out and finally got around to understanding gear ratio formulas. I realized that after creating a transmission setup, they're NOT saving! Even after naming the sheet. They somehow return back to the initial settings when you select the "fully adjustable transmission"! Here's the rub though... the custom tranny settings on my M6 and my AMG Gr.3 car saved! Is anyone else having this issue and if so, what's the solution or fix?

Any info would be greatly appreciated!