Saved Case Search Results does not include Service Issue related Columns

I have a saved Support Case Search which includes both "Case fields" and "Service Issue Fields..." in the Results Columns.

When I execute the saved search (via a soap call using c#) - my results do not contain any of the "service issue" fields

~ SupportCaseSearchAdvanced searchRecord = new SupportCaseSearchAdvanced();
searchRecord.savedSearchId = "26708";

Here's the request in fiddler

<?xml version="1.0" encoding="utf-8"?><soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><soap:Header><searchPreferences xmlns="urn:messages_2013_1.platform.webservices.ne tsuite.com"><bodyFieldsOnly>false</bodyFieldsOnly><pageSize>100</pageSize></searchPreferences></soap:Header><soap:Body><search xmlns="urn:messages_2013_1.platform.webservices.ne tsuite.com"><searchRecord xmlns:q1="urn:support_2013_1.lists.webservices.net suite.com" xsi:type="q1:SupportCaseSearchAdvanced" savedSearchId="26708" /></search></soap:Body></soap:Envelope>