I bet you have formulas that point directly at other cells in another worksheet:

=sheet2!b3

If you do, you may want to see if you can redesign your worksheet so that you
can use some key column (name/id???) that can be used to bring back the
birthdate.

Depending on how that table is set up, you may be able to use =vlookup() or
=index(match()).

Debra Dalgleish has some nice instructions for =vlookup() at:
http://www.contextures.com/xlFunctions02.html

and you didn't ask, but she has some nice instructions for =index(match()) at:
http://www.contextures.com/xlFunctions03.html

Vicky wrote:

Hi,

Can someone please help? I've got quite a lot of data that I want to sort
by the persons date of birth, but because I have cells with formula in it
(this works out the persons age) the sort function is changing the formulas
so the formulas no longer work becuase it changes the cell where it is
getting the data from. Does anyone have any ideas how this could be fixed??

Thanks!

--

Dave Peterson