Working on a Revit 2017 model in Revit 2020 trial

[Anonymous]

I have been contracted to complete work on another company's Revit model. They model they have shared with me is in Revit 2017 and I am currently working with the Revit 2020 Trial version with the intention to upgrade after the 30 day trial period. Am I able to work on their 2017 model without upgrading it to the point that they will no longer be able to access it in their 2017 version of Revit?

[barthbradley]

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@Anonymous wrote:

Am I able to work on their 2017 model without upgrading it

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No. You will need to be on same version (and build, preferably) .   

...you are kind of in a pickle too.  Autodesk Previous Version Rights only goes back to 2018. 

[Anonymous]

many threads on this already

Revit has never had the ability of saving down to a previous version