How can I copy a table with some cells that have an image inside from a doc to another

Question

I've copied Serge's script (Serge insas) But when there's an image inside a table cell, it isn't visible in the targetDoc. Do you know what to do?

function copyDoc() {
  var sourceDoc = DocumentApp.getActiveDocument().getBody();
  var targetDoc = DocumentApp.create('CopyOf'+DocumentApp.getActiveDocument().getName());
//  var targetDoc = DocumentApp.openById('another doc ID');
  var totalElements = sourceDoc.getNumChildren();
  
  for( var j = 0; j < totalElements; ++j ) {
    var body = targetDoc.getBody()
    var element = sourceDoc.getChild(j).copy();
    var type = element.getType();
    if( type == DocumentApp.ElementType.PARAGRAPH ){
      body.appendParagraph(element);
    }
    else if( type == DocumentApp.ElementType.TABLE){
      body.appendTable(element);
      }
    else if( type == DocumentApp.ElementType.LIST_ITEM){
      body.appendListItem(element);
      }
//    ...add other conditions (headers, footers...
    }
  targetDoc.saveAndClose();
}