procedure TForm.mCreatenNewImageFromTextLayerClick(Sender: TObject);
var
  b: TIEBitmap;
  i: Integer;
begin
  b := TIEBitmap.Create;
  try
    ImageEnView1.Layers[idx].CopyToBitmap(b);
    ImageEnView1.IEBitmap.Assign(b);
    ImageEnView1.Update;
    for i := ImageEnView1.LayersCount - 1 downto 1 do
      ImageEnView1.LayersRemove(i);
  finally
    b.Free;
  end;
end;

procedure TForm.mCreateNewImageFromTextLayerClick(Sender: TObject);
begin
  ImageEnView1.Assign( ImageEnView1.CurrentLayer.Bitmap );
  ImageEnView1.LayersClear( False );
end;