Rick -
I did read the OP's original message before posting, and I concluded that
either she didn't know how to delete a name using the Name Manager, or she
didn't know how to change names that are used in formulas, or both.
So, I was trying to suggest that, instead of trying to use the Name Manager
to change a name directly in a single step, she (a) delete the old undesired
name, (b) define the new name, and (c) replace the old with new in formulas
using Replace.
First she wrote: "...But the Name Manager only shows the one name (MP2OZ).
It does not show ML2OZ."
So she should be able to delete MP2OZ, which is the defined name that she
doesn't want.
Then she wrote: "How can I change this cell to "ML2OZ" and have all of the
formulas
updated?"
After deleting MP2OZ, she should be able to define the desired ML2OZ.
And then she can change formulas by choosing Home | Find & Select | Replace
....
- Mike