I saw that you have not really reverted my changeset but improved a lot of strange things I tried to improved 3 months ago.

Good work.

But it seems there are still problems :
- ways 1106651365 and 715152760 have the same name but are 2 different graben
- same thing with the graben R2a : the direction is not the same so cannot be the same graben
- almost all relations have only 2 shorts ways, these ways should be merge (graben L1, R2d, L1a...)
- almost all these relations are useless : just add the tag destination to the merge way and you will have the same result

Best regards