Hello. Thanks for mapping on this project.
There are quite a lot of multi storey buildings which need to be mapped on special way.
Map over the rooflines and move the whole to the footprint of that building
https://drive.google.com/file/d/18XrU8PzHfe_cYwQCmfZEO1kS1Ze-Y7gX/view?usp=share_link
Best regards
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            Published using OSMCha: https://osmcha.org/changesets/132924210
            