At the moment there is no way to force the query list to refresh. One workaround you could do would be to connect to a different a project, and then connect back to the original project. Also, whenever a query is edited or deleted, the query list is refreshed. Obviously neither of these are ideal, but at least you wouldn't have to shut down the app. I have added this issue to our backlog. Thanks for the feedback.
the Telerik team
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