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save to a previous version

Status: Under Review
by Active Contributor alundr on ‎12-19-2012 06:40 AM

Can we save/"save a copy as" to a previous version of inventor.  This is a great tool in autocad and it would be great to see it in Inventor.  We have sister companys that are currently using a newer version of Inventor and as a result, we can't open their files.  

Status: Under Review
By: Distinguished Contributor cadman777 | Posted ‎01-07-2013 08:11 AM , edited ‎01-07-2013 08:12 AM |

Autodesk will never comply w/this, b/c it will prevent their use of "social pressure" to coerce people into upgrading, due to not being able to open newer models that people share w/co-workers and customers.

Why do you think they "restructured" their "upgrade" policy/marketing?

They rely heavily on extortion, just like government, to make their investors rich.

By: *Expert Elite* | Posted ‎01-08-2013 08:03 AM , edited ‎01-08-2013 08:09 AM |

ignoring "social pressure" - how would it even work?  say release B adds a new command - how can release A understand how to open the file with a command that was never in existance at its release?


Even if it's the same command but with new options (or the mathematics behind the command are different) then you couldn't ensure the previous version would manipulate the file in the same way as a later release - which could cause MASSIVE problems.  E.g. a loft is created with specific rails and tangential ends, this is rapid prototyped and approved - the companies moulding dept use the previous version of Inventor and open the file,  adds feeds, some draft-angles, etc. and regen the part, but the Loft command has a different set of equations and the tangential ends are different - resulting in a different moulded part to the rapid prototype - resulting in MD/customer unhappy the finished result is different from their approved sample - resulting in company complaining to Autodesk.


The only way around this is to have the "save as previous version" to convert the part into a dumb solid and you've got that already with iges/step export/import.


AutoCAD worked fine because everything was lines in 2d/3d space with nodes and end-points (basically a dumb solid) - without a feature-history which the program has to run through to create the part.  This feature tree gives us the control we love about Inventor, so I don't think it's as simple as a marketting decision to force everyone to keep up to date all the time. 

By: Employee | Posted ‎01-28-2013 11:07 AM
Status changed to: Under Review
By: Valued Contributor jberns | Posted ‎02-20-2013 02:47 PM

Would a "compatibility mode" be useful if it could just view the model? Similar to Microsoft Word 2003 being able to open Word 2010 files. Granted they can edit the word document in most cases because converting text and margins is much easier than converting 3D model features.


For example, how would Inventor 2008 open a Sculpt, Combine, Grill, or Bend feature created with Inventor 2010? These objects can't be eliminated during the Save as process. This is a difficult challenge.


As much as I would favor this "Save as previous version" option, the data integrity would always be in question.


Perhaps Autodesk could create "object enablers" or "compatibility" tools to allow "view-only" mode for models created with newer versions of Inventor.


Of course you could download the Inventor 2013 viewer for that:  Inventor 2013 Viewer download






By: Valued Mentor | Posted ‎06-06-2013 12:58 PM

This would be a great added feature. Features that are incompatible with older versions could be converted dumb solid bodies with their feature information stored as ingnorable data that is only read should the part be reopened in a later version to allow it to be used as a normal feature again. 

By: Distinguished Contributor tmoney2007 | Posted ‎12-17-2013 08:21 PM

It should be relatively easy to mark a file as simply migrated.  We have testers that have access to more than one version of inventor on their computer.  If files in the production environment are inadvertently migrated, we are left hoping that there is an old version of the file that hadn't been migrated (which often doesn't happen if they make edits without realizing that they are in the new version. 


Alternatively, for our issue, being able to forbid migration for files in certain directories would probably help as well.


As a large business using this software with downstream integrations, we can't make the transition to a new version of software without testing.  Each time we have looked at transitioning versions, this is always a reason for hesitation.  If a file is lost, we can lose large amoungs of time ($$$) while we attempt to do a restore from an offsite tape backup of our file server.

By: Distinguished Contributor duncan | Posted ‎09-11-2014 01:13 PM

I've always believed that Inv could use 'dumb' features to represent the features created in the later version so the older version could open them, when saving as older version.



By: Active Contributor motaba | Posted ‎10-02-2014 01:28 AM

This is very important idea, and autodesk surely it must solve.

By: Active Contributor _DanSolo_ | Posted ‎01-31-2015 10:04 AM

even if they could do this, they would not. None of the 3D CAD software companies do this.

This is how they sell new software. It is all about recurring revenue.

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