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As mentioned in the submission, there are several ways in which a user can choose to assign additional instances to a message flow. Settings can be applied as a property on the message flow artifact itself. These settings remain in force across restarts of the server. Another option is to abstract the desired number of additional instances away from the flow itself and define it as a property of a workload management policy. The workload management policy can then be associated with one or more message flows as a setting applied in the BAR file at the point of deployment. Using the same policy with multiple flows means that if a user later updates the policy it will automatically apply to all the flows associated with it. WLM policies are also redeployable. We mention this option specifically because it appears that one of the motivations of the suggestion is based on the large number (6000) of message flows. Given this large number of message flows, using a WebUI action to manually and individually update each message flow would seem just as user-intensive, but worse because that would need to be used on each flow where as a policy can be reused across multiple flows. As mentioned, another option is to use the Web UI (or directly through the public admin REST API on which the ACE Web UI is based) to update the number of instances. These changes are currently deliberately not persisted across server restarts (the API deliberately utilizes a non-CRUD action which is non-persistent, as opposed to a PATCH verb action which is used when wanting to persist an update).
Given this background, we could see a couple of potential enhancements that could be investigated in future - either providing a PATCH method and an associated Web UI action to "update and persist" ... or a global server-wide setting in the server.conf.yaml file in a similar vein to the referenced feature "UDP-persist-global-overrides: true" which would then impact the manual actions used by the existing Web UI option. We are updating the status of this request to Future Consideration in acknowledgement that a fraction of our users might prefer one of these options over the existing intended persistent mechanisms already provided (setting in the flow or on a WLM policy)... whilst noting that the product does already provide two ways of achieving the described use-case (one of which could be argued is more suitable for large numbers of flows) and therefore it is likely this request will be seen as a low business priority unless we receive strong evidence to the contrary via comments on this request.