When a model is opened from ARD hub and I try the option to save it as a different version, it is not working as the checkbox is disabled.
But it is working fine with the model open from TDM Repo or File.
ARD Hub does not have flow versioning
Agile Requirments designer
This a nomenclature issue:
the checkbox in the screenshot refers to an "old school" version, where the flow would be,
basically duplicated and the second version would be appended to the end of the first.
That led to flows of increasing size and complexity.
That checkbox still works for local filesystem flows, or for TDM hosted flows.
In the Hub, though, we introduced the notion of Hub version, which would hold independent flows and would be managed at the Hub level, on the back-end
For Hub hosted flows, the "old school" versioning is intentionally disabled, to cut down on the flow size and to encourage users to use only the Hub for their versioning needs.