Hi Team,
I have been creating some custom formulas and today when wanting to edit one, it had vanished.
This is how I have been creating them and what it should look like.

But today when going to edit one, it shows this:

When I test it in preview it works as intended. I spent a lot of time creating the formula, so I am hoping there is a way for me to recoup the code?
Any advice is appreciated.
Cheers,
Benjamin.