I am using LT98. I have copied a floor plan from one dwg to windows clipboad, then into the modelspace of my dwg. I then exploded, & changed all items that I can find, to a layer called 'floorplan'. I then purged the dwg of all past layers. - One won't go away. It is called '-tblk'. I went to original dwg and turned that layer off before copying what I need. I have even erased what I have pasted into my title block, (so my model space is empty again), - erase;all;; and CAD says there is nothing there. - The '-tblk' layer won't purge. I don't have it selected as current layer, frozen, turned off, etc... - It SHOULD purge, but it won't. What am I missing? - craigr