Save to new folder causes formula errors

K

KD123

I'm using a workbook with several protected cells. Suddenly, when I enter my
data, some of which contain simple formulas like 4+2 or sum(C1:C5), and then
I save the file to a different folder, then some of the cells that total have
a reference error (REF#!). Is there some protection or formatting that could
have changed so when the workbook is saved with formulas in it the error
comes up?
 
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