title: Clear Formula and keep overwritten value
body: <p>I do have a document with some formulas retrieving data from other tables. Some of the users were overwriting these formulas with more accurate data. I would like to delete now all the data retrieved from the formulas (so basically I would like to delete the formulas) and only keep the manual entered data.</p>
  
  <p>How could this be done? I just know the other way around :)</p>