When I do a conversion from say an AutoCAD 2010 file to Auto CAD 2000 nothing displays in the new 2000 file. The conversion report indicates no errors. An "Audit" of the new 2000 file shows 10,000 elements but neither the "Model" of "Sheets" show up. When opening the file in AutoCAD 2000 the "Preview" shows a perfect picture of what's there. Wht's going on and what do I need to do to fix it. I've attached the troublesome file. The 2000 file also shows up fine in DWG TrueView but not my AutoCAD 2000. I'm running in a MS Windows 7 environment. Thank you.
Your R2000 file only seems to contain content in paperspace, 19 blocks total and nothing else.
There are 5 more blocks in modelspace. None appear to be related to content in paperspace.
The rest of the content you mention is not located anywhere and all purge away clean.
Your DWG is a conversion from INVENTOR as all the objects list as such. None appear to be R2010 content.
There doesn't seem to be much to fix as I cannot manipulate any of the content in AutoCAD 2013 (not the reader) to 'fix' it. Can you touch or edit anything in R2000? It appears you only posted "converted" R2000 files and not the 'original' 2010 file.