Is it possible to get Excel to render the results of a formula so I can delete the extra columns that the data was derived from?
I am concatenating a few columns and once I have my final column with the final values I want I want to kill the old ones.
If you really are sure you don't need the old data anymore, you can just copy the whole result column, select Paste Special->Paste as Values.
You'll lose the formula, but your column will just be replaced with the result of the formula calculation.
However it would probably be a better practice just to hide the old columns though, you're going to regret it if you erase all your source data and then find a slight formula error or typo.