I have drawings that were originally created in AutoCad E 2006. They were modified in  AutoCad E 2009. They were both saved as 2000 DWG. When I try and print from 2006 half the drawing disappears. It looks OK from the model but when I do a print preview 1/2 the drawing disappears. Any new line or blocks added to the drawing will also not show up on the print out.I have tried changing the properties of all the lines to match with no success. They will print fine from 2009. I changed the draw so everything is on the same layer, the line type is the same, the line wieght is the same, the line scale is the same, the line color is the same, line thickness is the sameI need to have it print from 2006 as some of our customers only have 2006.Anybody have ANY idea what is happening here??Any input would be greatly appreciated!!ThanksDJ

Did you try and save the dwg on your 2009 version as a 2002File.  Also, you may find that the print configurations vary slightly.  In 2006 you could try and reconfigure you print layout to suit your plotter, centre the plot, print extents, scale as appropriate.  

I think you should better upload screen captures so we can understand or figure out what's happening.
For example, have you only one or several viewports? What are the properties of that viewport/-s? Are you using ctb or stb?

i have tried saving it in 2000 and also 2004. i have tried saving it as a DFX also. No luck with any.I would LOVE to upload a screen shot or the whole file but do not know how, if someone can help a newbie I will upload it.ThanksDJ