Hi  pitscheplatsch,
Okay, yes, I understand. That said, no one is responsible for updating our sector, and it would be impossible for me to do it by editing element by element, because it is much too long. Moreover, my layers fit together perfectly, even taking into account the land registry. I have noticed, moreover, that other cities proceed this way. If we want quality and accurate mapping, we have no choice but to rest everything on solid foundations. I will continue, but if you tell me that it is strictly forbidden to proceed this way, I will stop.