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In the PARAMETER PROVIDERS list tab, a "Fetch Parameters" button could be available on each Parameter Provider, which would cause it to pull all available parameters and values from the external source, based on the current configuration. These should be cached in the Parameter Context Provider as a set of proposed changes, but not actually persisted yet. Next, a Fetch Apply Fetched Parameters view should pop up, which initiates the application of the new values to the flow, similar to when a Parameter Context is updated today:
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It would also be possible to have both an APPLY and an APPLY AND FETCH button in the Add Parameter Provider view. The former would apply the configuration changes and close the dialog, and the latter would apply the changes, close the dialog, and then launch the fetch/apply sequence described above.
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