If, for example, you placed you value in cell D4 of the sheet then your links would all look like:
=MonthsElapsed!$D$4
so do a search for these cells (
Ctrl+f to bring up the
Find dialogue):
Then you can click
Next repeatedly which will jump to the cells one at a time, and while the dialogue box is still open you'll be able to drag or edit the cells concerned, then click
Next again. Or you can
Find All and work your way down the list with the mouse.
Oh, I forgot, you've got to
Look in: Formulas