CAFE- How to convert formulas on this sheet?

[Leith]

Hello,

I import data from Cognos into Excell in the form of columns. When I do calculations on the columns, and referesh the data the next day, the new calculations diappear. I tried clicking the "convert to formulas on this sheet" but it is greyed out.

Do you have any ideas for how to activate it? and save the newly created formulas?

Thanks