Is what you should do the following things: 1 Save a copy of the original file. (Archiv 1) 2 Export (Archiv1) to DXF. 3. Open file Archiv1.DXF created and run purge; see that you could not purge blocks in the original file, now if you can purge DXF finished purging once again save as DXF and compare the file size with the DXF original DWG file, you will notice that the size has reduced considerably. 4. - Opens a new drawing set its parameters (units, etc.) and inserts the DXF file as a block and Explode. 5. You should do the same procedure for all files that are too large, and including external references. 6. The most important thing is that you should not re-run (Copy_Paste), because this action generates virus in your files. function uses WBLOCK
You see this is a very long, but personally to me it and my files are considerably reduced
1.Open the drawing you that contains the object you need to copy. Select the object or objects using whichever method best suits. To select everything in the drawing use "Ctrl+A."
2.Right click your mouse after the objects are selected. A contextual sub menu will appear. Select "Clipboard" and "Paste" and the object will be placed on the clipboard.
3.Open the drawing you want to add the object to. If it is a new drawing, it must be created and can be done with the original drawing still open.
4.Paste the object in the same drawing by right clicking again. From the sub menu choose "Clipboard>Paste." If you are pasting into a different drawing, on the "Ribbon> Home" tab, go to the Clipboard panel and choose "Paste." The object will appear by the cross hair cursor.
5.Left click to place the object into the drawing. The object's properties are also added. This includes the objects' color, layer, etc.