I have an client list containing general information including the birthdate.
Out of about 600 names about 20 birthdays show ###### in the cell. If I hover
my cursor over the cell the date shows. If I then change the date, all of the
other cells where the birthdate showed the pound sign change to their correct
dates. However, I cannot save the updates as when I go back none of the
birthdates in question are updated and still show #####. The date format is
mm/dd/yyyy. I have never seen this before and am stumped!