title: Prevent copying and pasting a cell from a column with data validation to another column also with data validation
body: <p>I have a worksheet where I have already prevented a user from copying and pasting a cell in a normal column into another cell in a column with data validation drop-downs.</p>
  
  <p>The issue I'm now having is that a user is able to copy and paste a cell from a column with data validation into another cell in a column with data validation. Is there any way to prevent this??</p>
  
  <p>Many thanks,
  Kieran </p>