Nice detective work, David.
And this could be dangerous with formulas like:
=sum(a:a)
=sum(a:b)
=sum(b:b)
If you think those hidden (where are they?!) values are gone.
You may want to share it with John Walkenbach for his excel oddities page:
http://j-walk.com/ss/excel/odd/index.htm
And while I was playing with it, I put some formulas in those cells that were
soon to become hidden behind the merged cells.
I merged A1:K1
then used the format painter to paint over A2:K2, A3:k3, ...A10:K10.
Unmerging A2:K2,...A10:K10 brought back the formulas, too.
I had a formula in D2.
I put this in a cell (D28):
=D2
D28 showed the results of the formula in D2 no matter if that cell was "hidden"
or not.
It might be a way of hiding those proprietary formulas <bg>.
Formatting (font/fill/conditional formatting) didn't make it out alive, though.
Data|Validation on one of those hidden cells did make the round trip--from excel
to the twilight zone and back.
David said:
Hi Patrick,
Had to see the spreadsheet myself to believe it, but once seen, was able to
reproduce in Excel 2000 as follows:
Fill several cells up then
1) Merge any two cells vertical or horizontal, inside or outside used range - doesn't matter
2) use the "Format Painter" tool bar icon to copy the merged cells format, to other cells
which then show up as merged.
When the secondary merged cells are unmerged they still have their
original values.