On 5 April 2016 16:18:53 GMT+01:00, Greg Morgan 
>In my case, you'll have to provide more context here.  I look at OSM
>Inspector and Keep Right and see all these broken things.  That is a
>beautiful discovery.  Mappers are trying to improve the map that is
>very
>much a human endeavor and mistake prone.  I am just lost how everything
>is
>a bad import.

I don't think any of those import is bad, at least not on the criteria of 
duplicated way/relation tags. In the low count cases, the duplication is likely 
to have happened during later edits rather than the initial import. Today 
duplicating tag on way+rel is considered bad practice, but that came about 
slowly (standard practice used to be to tag the way only).

Duplication is also fairly harmless (as long as the tags don't contradict), and 
some would argue that it isn't worth the version churn.

Broken polygons on the other hand (which were probably broken manually, not by 
the imports) are worth fixing. They are easy to detect but not always easy to 
fix. Some error types might be mechanically fixable, but I guess that most need 
human intervention.
-- 
Vincent Dp

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