text: Title: Data validation being overwritten on paste
  Body: Awesome tool, btw. Super useful!
  
  So I built a pretty decent "excel form" loaded with data validation. The problem is that when users copy a range and paste in others, they end up overwriting the validation. I've looked around for VBA workarounds to ensure:
  1) validation rules can't be modified from the cells in which they are set.
  2) validation is still applied on the targeted cells. So paste only works for values which pass validation and leave cells blank where they don't.
  
  Any ideas on how to proceed on this?
  