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AutoCAD 2010 – Limits on Saving to Earlier Versions

When you save back to a prior release,there are some impacts to the files.

Here are some of the limitations that affect files that are saved in prior releases.  plucked from the AutoCAD 2010 help file with some edits and comments.

Saving a drawing in Release 2000/LT 2000 format is subject to the following limitations:

Saving a drawing in Release 14/LT 98/LT 97 format is subject to the following limitations:

Saving a drawing in Release 12/LT 2 DXF format is subject to the following limitations: (is anyone still doing this???)  (This is for DXF only – you cannot save back to DWG version 12 from inside AutoCAD 2010)

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1 Comment To "AutoCAD 2010 – Limits on Saving to Earlier Versions"

#1 Comment By Tim Luke On March 10, 2011 @ 11:23 AM

We are in the process of upgrading to AutoCAD 2010 from AutoCAD 2007. I know we are behind the times, seeing as 2012 will most likey be shortly relaeased. We save the majority of our drawings in AutoCAD 2000 format in order to pass on to our clients. AutoCAD 2010 created a lot of proxy information.Multi-leaders special dimensioning… Which has been a bit of a problem till I learned how to use
-EXPORTTOAUTOCAD. We then discovered some stray MTEXT entities that only show up if you actually open in AutoCAD 2000 or 2002. I had to
re-install Volo-View Express just to verify. I think it has something to do with MTEXT dynamic columns. If I open and save the same drawing thru 2007 they disappear. I had to write a routine to remove the extra characters being produced by 2010.