Hi dvdhoven, thanks for your kind input. Which kind of »underwater damage« are you referring to? The area I did my changes in did not contain any (under)water parts at all, but I'm happy to learn. Also, ID is the #1 (and standard) editor on OSM and these particular route relations touch parts all over the city. There will be dozens of iterations of these relations during the next years and a major part of these will be done in ID. Maybe there's a more robust way to tag the segments you are now referring to as »damaged«? Best, felixeee