Hi, just a small heads up. Adding destroyed:building=yes to them does nothing. You are supposed to add destroyed: in front of the existing building tag. For example this https://www.openstreetmap.org/way/471739104 building=detached will become a destroyed:building=detached. Them still having a building= key without destroyed: in front is why they also don't dissapear from the map and still show up as normal buildings.