Choosing 'Run JasperServer Report' in the Repository Navigator on a report that contains cascading Input Controls does not provide any options for the Input Controls that depend on other Parameters.
e.g. I have two input controls. One selects between products we produce, the second chooses one or more versions of the product selected by the first control. When running the report from the Jasper Server web interface the second control always displays the list of versions for the selected product. When running the server report via iReport I can choose a product but the versions multi-select is never populated.