Merging ref=* into name=* and copying a misspelling from Wikipedia to OSM are both very bad ideas. Example: v75 of relation 941197. The common name is "Höllentalstraße", and that's what belongs into the name=* tag. The "B 27" is not part of the name, it's the ref=*, and we have a consensus in Austria to omit the space in the ref=*. The space in "Höllental Straße" is a spelling error (so-called Deppenleerzeichen) in the official name, so this should go into official_name=* at best. I am going to correct this one relation, but I guess that you changed many other road relations in the same way, so they need to be corrected as well. This might be a bigger task. I suggest a partial revert of your changeset, undoing at least all name changes.
@fkv, I think you have made a mistake - v75 only adds wikidata ID. It does not change name or ref. name was changed in v74 - https://www.openstreetmap.org/changeset/49087662
Oh, you are right. Sorry for bothering you.
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