I am having a problem with a survey drawing file. While the survey looks good the drawing is filled with acad proxy entities that say "DATA POINT", I have tried erasing the entities but even though the command line says "erase X found" the objects remain on the screen. I have tried exploding the objects, but the "DATA POINT" is just then turned into an MTEXT which can be deleted but the original data point remains. Is there anyway that these objects can be removed from the drawing?