I'm working in Civil 3D 2019, and in my CAD dwg I have apparently drafted several multileaders that are at different elevations than the majority of the other drawing objects. In the screenclip below, you'll see several multileaders in red at a much higher elevation and several multileaders in yellow at a much lower elevation. I am trying to get these two sets of multileaders to zero elevation, and on the same plane (z coordinate) as the rest of my drawing. The FLATTEN command doesn't work. I've seen several past posts with solutions involving code, which is over my head. Any help would be appreciated. Many thanks in advance.
