I have a Google sheet. I have merged a couple of cells to get a wider space for free text answers. I have two merged cells that is showing the date for last changed made in the bigger merger. The script works good.

           
        function onEdit(e) {
  
        var row = e.range.getRow();        
        var col = e.range.getColumn();       

        if(col === 7 & row === 66){
         e.source.getActiveSheet().getRange('E67:F67').setValue(new Date()); 
        }          

        if(col === 7 & row === 70){
        e.source.getActiveSheet().getRange('E71:F71').setValue(new Date()); 
         }
         }

However, if I insert a row above this cells it's all falling apart. Anyone know how to work around it?