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Submitted byAnonymouson12-19-201206:40 AM
Status:
Implemented
save to a previous version
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.
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.
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.
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.
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.
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.
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.
I agree with tmoney2007. Being able to save back one version would make testing the new version a lot more viable. The cad manager or designate could work on live data al ot sooner in the process. This would encourage the earlier adoption fo new versions.
I'm a consulting engineer. This is a real problem for me. I do work for Altria (Philip Morris), Dupont, Ball Corporation, Eagle Bluff Design.
Each uses a different version of Inventor. I have to keep 2012, 2013, 2014, 2016 active. At this point I literally have different computers set up on the versions because if some common part gets inadvertantly saved by a newer version things get messed up.
Wery important feature if it can be done. Autodesk should not think that it will cause people to stay with older version, just the opposite. If there are new features not supported by the old version they can be dumbed or omitted or even "cant convert this dataset" may be an option. It will allow to work with the new version using regular non migrated data for a while and make the switch when ready.
Backward compatibility would assist us as a State High School in New Zealand. We run Education versions (2012) and upgrade when the PCs (suites) are upgraded. The time to PC replacement is 5-10 years. This means updating software can't be done due to PC compatibility.
Our difficulty arises when students with current versions on personal desktop machines are not able to access their files at school. Assisting them is challenging while those with laptops can bring their device to class.
If students with the most recent version of Inventor could save in an older version then we could support them on the PCs in the classroom.
We're investigating whether Inventor 2016 alone could be installed to our present machines alongside the already installed 2012 Education Suite.
Keep in mind that a lot of CNC machines are now utilizing native software formats for importing the 3D geometry for programming. We have machines that will utilize native 2015 Inventor files for programming, but since we migrated to 2016, we are now forced to translate these files to step or sat files for programming, creating additional steps for programming and more revision controlled files to maintain.
This idea has been implemented within Autodesk Inventor 2017.4 to associatively reference files last saved in Autodesk Inventor 2018. Special thanks to everyone who cast a vote for it.
There isn't a "save as previous versions", as such. It was implemented by enabling "open newer version". So 2017.4 will open 2018 (or newer) files. 2018.3 will open 2019 (or newer) files, etc.
Nothing has been done for this prior to 2017.4 though.
