Hi Jay! I’ve made sure that all features I delete do not have any extra tags other than building=yes, and I’ve been careful to keep any relations and tags that already existed. The reason I delete buildings is because most of the Charlotte ones are from a Microsoft import that is very inaccurate, and it’d be super time consuming to take those existing areas and add nodes to them and drag them and everything. I am also currently in the process of remapping all of the sidewalks in Charlotte, as I mainly do pedestrian work, and a lot of the old data is innacurate, hence why I delete it. If I break a connection, it will always be added back to my new network within the day. I know that this is not a perfect method, however it significantly speeds up the editing process and since OSM is a pastime for me, I like to be efficient with it. I also have plans to add addresses and POIs to uptown once all the pedestrian routing and ways are added, though that won’t be for a few days. Thanks, -dmich9