This changeset has overwritten some roads with lower quality data. See e.g. changeset/89157787 re: Kirkebakka in Fluberg, the speed limits of this road is now wrong, the ground cover type is incorrect, and speed bumps along this road are now disconnected as of the current changeset. I will fix these issues for Kirkebakka and the other roads in Fluberg, but it might be worth double-checking this changeset as I would guess there are also errors elsewhere.

Thank you for the tips @Tractor. I will make sure to look into using JOSM and reimporting address nodes from Kartverket based on info from that page. I will look into it as soon as an opportunity arises. Thanks :-)

Thank you @Tractor, I was unaware of this consensus. Is there any script that can be used to revert to this address tagging scheme without destroying the buildings in the process? I.e. restore nodes and remove addr tags from the buildings? The changes so far have been in the hundreds, and going through all of those by hand would be a pain. I have some limited scripting knowledge from before as well.