Hi @dude ,
Workflow definitely is always a good solution if you want to automate a complex set of tasks and integrate this way of backing up vRA into a more comprehensive backup flow across multiple machines and applications.
I would try to use pre-freeze and post-thaw snapshot scripts here - similar to what they describe for Avamar - here’s some documentation on this: https://documentation.commvault.com/11.22/expert/36323_pre_freeze_and_post_thaw_processing_using_vmware_tools.html
So the described “stop-vra” function should be called pre-freeze to stop vRA before the VM gets backed up - with start-vra being called post-thaw to continue operations.
Haven’t tried it myself but as long as VMWare Tools are running in the vRA which I believe they do, you should be fine :)