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It would appear that AzureSynchronizableCloudSyncItem is now broken for new projects, as the ID column for mobile service tables are now strings (http://social.msdn.microsoft.com/Forums/windowsazure/en-US/f020a4e2-9301-4318-9023-3a1668959221/important-change-in-mobiles-services-tables-id-column-is-now-string?forum=azuremobile), an exception is thrown when SynchronizeAsync is called to retrieve data from the azure mobile service. Any plans on when this might be fixed?