You will want to be careful with the scale factors listed by the geodetic labeling process in LDD, I just checked the scale factor listed in AutoCAD vs what was listed in Corpscon which checked between the two but is not the combined scale factor, it is just the grid scale factor. When I list the combined scale factor in Trimble TGO, under view, point labels, combined scale factor. & the combined scale factor listed in calculating from TDS Survey Pro on the TSC2 data collector they check against each other as the combined scale factor. So if you are looking at getting true ground distances from your grid coordinates than you will want to scale the grid distances up by the (1 / combined scale factor) to scale up to ground distances. Hope this is of some help.