Hi Mike, our engineers are trying to repro this inhouse. If it's not too much to ask, would you be able to file a support request or email me directly so that we can reach out to you for additional details if necessary?
But to your points, correct, we did not improve the underlying functionality yet. Right now, it is a lift and shift, with some UI consolidation where it seemed possible with light touches. Our underlying assumption is that we need to introduce the new UI gradually. Allow our customers enough time. And then, oh yes, data connections, refreshes, refresh history... it's going to get better, iteratively.
And the Refresh button triggers an on-demand refresh of the semantic model. It's one of those little things that hopefully makes it easier for our model owners to validate on the spot that their models can access their data sources. We'll see how we can make this clearer in the UI.
Thank you for your feedback, Mike!