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Not really. Ideally, you need to write your resource such that these changes are backwards compatible. We do this for the resources we ship with Heat (add new properties while supporting deprecated properties for several releases).

On Apr 11, 2016, at 1:06 PM, "Praveen Yalagandula" <ypraveen at avinetworks.com>
 wrote:

> Hi,
> 
> We are developing a custom heat resource plug-in and wondering about how to handle plug-in upgrades. As our product's object model changes with new releases, we will need to release updated resource plug-in code too. However, the "properties" stored in the heat DB for the existing resources, whose definitions have been upgraded, need to be updated too. Was there any discussion on this?
> 
> Thanks,
> Praveen Yalagandula
> Avi Networks
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