text: "And the shape isn't even correct the one we see on the image in editing mode."
  
  Oh, believe me, it is correct. I checked on ground. "the image in editing mode" Which one?
  
  "I mean all this is also about people using the data, which simply doesn't get easier when people's "mapping fun" gets somewhat out of hand."
  
  That's why I added the relation. It makes querying easier.