Hello, my intention is to improve your understanding. You appropriately disconnected the highway and building and some buildings have an accurate shape. However, beware that the Nothern walls are visible in the imagery you used. It should not be included in the size of footprints and they should be moved to the base of building to prevent data overlaps. Enter this url in to the custom imagery offset by 0,2.32 https://wayback.maptiles.arcgis.com/arcgis/rest/services/world_imagery/wmts/1.0.0/default028mm/mapserver/tile/20337/{zoom}/{y}/{x} I hope this helps.
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            Published using OSMCha: https://osmcha.org/changesets/173814560
            