This is when it gets really frutrating.
I have a column with text like "c:\filesJan10"
It is excel proper, so I could format the column to the type of my liking, like Text "Text format cells are treated as text even when a number is in the cell. The cell is displayed exactly as entered."
Lets replace c:\files with blank ''. Excel will change the format to date format. But I explicitly told it the column was text.
This bites me even with a proper excel spreadsheet, not just when using a data table. I can't cut and paste from the same spreadsheet/workbook without excel trying to reformat - ignoring my formatting I just specified.. Where is the freakin' "ON" switch so I can switch this behaviour off?