title: How to disable Cell Drag and Drop for a specific workbook?
body: <p>I have a spreadsheet where users input information into column A that is used in formulas in column B. B1 uses the information in A1, B2 uses in the information in A2, etc.</p>
  
  <p>The sheet is "protected" to only allow users to select and change unlocked cells in column A. They should not be able to change the formatting or structure of the sheet. However, even when the sheet is protected, they are able to "move" cell contents by clicking on the frame of cell and dragging it onto another cell. </p>
  
  <p>If they move A1 onto A2, B1 is now using the information in A2, and B2 gives a reference error. </p>
  
  <p>I would like that, when a user "moves" a cell, a macro is fired that will undo the move.</p>
  
  <p>How can I programmatically detect when a cell is moved or is there a different solution?</p>