List-ContentItems responding with invalid link

I have an InfoEngine task that is querying Windchill for a document. See the following code for an example. This task works great on many customer servers without issue. On one customer server, about 50% of the time, List-ContentItems is returning a link that is different than it usually returns, and the page appears to be a login page. If anyone has any insight into why Windchill would be returning an invalid link to a login page 50% of the time, let me know.

Valid Link: http://example.com:8020/Windchill/servlet/WindchillGW/wt.fv.master.StandardMasterService/doDirectDownload/SExampleFileName.pdf?folderId=60824325082&ft=FF&userid=48748377706&adId=52831251988&fileName=00000018a96b31&refsize=727814&mime=application/pdf&mk=wt.fv.master.StandardMasterService&ofn=SExampleFileName.pdf&c=93&riid=-1&sT=1701353872&sign=TBG9pmA%2FsEOoOVZ7gaxhDQ%3D%3D&site=http%3A%2F%2Fexample.com%3A8020%2FWindchill%2Fservlet%2FWindchillGW&AUTH_CODE=HmacMD3&isProxy=true First

Invalid Link: http://example.com:8020/Windchill/servlet/WindchillAuthGW/wt.content.ContentHttp/viewContent/SExampleFileName.pdf?u8&HttpOperationItem=wt.content.ApplicationData%3A62831251989&ofn=FileName.pdf&ContentHolder=wt.doc.WTDocument%3A62831251961&forceDownload=true

...
<ie:webject name="Search-Objects" type="OBJ">
	<ie:param name="INSTANCE" data="${@FORM[]supporting-adapter[*]}" valueSeparator=";" delim=";" default="<%=NamingService.getVMName()%>"/>
 <ie:param name="OBJECT_REF" data="$(@FORM[]obid[])"/>
 <ie:param name="ATTRIBUTE" data="$(@FORM[]attr[*])" delim="," default="*"/>	
 <ie:param name="WHERE" data="$(@FORM[]where[*])" delim=","/>	
 <ie:param name="TYPE" data="$(@FORM[]type[*])" delim=","/>	
 <ie:param name="CONTAINER_REF" data="$(@FORM[]containerref[*])" />	
 <ie:param name="ITERATION" data="$(@FORM[0]iteration[0])" default="LATEST" />	
 <ie:param name="VERSION" data="$(@FORM[0]version[0])" default="LATEST" />	
 <ie:param name="SORTBY" data="$(@FORM[]sortby[*])"/>	
 <ie:param name="SORTED" data="$(@FORM[]sorted[*])"/>	
 <ie:param name="PAGE_COUNT" data="$(@FORM[]pageCount[])"/>
 <ie:param name="PAGE_OFFSET" data="$(@FORM[]pageOffset[])"/>
	<ie:param name="GROUP_OUT" data="holders"/>
</ie:webject>

<ie:task uri="addObjectId.xml">
	<ie:param name="group_in" data="holders"/>	
</ie:task>

<%if ( getGroup ( "holders" ).getElementCount() > 0 ) { %>

<ie:webject name="List-ContentItems" type="OBJ">
 <ie:param name="INSTANCE" data="${@FORM[]supporting-adapter[*]}" valueSeparator=";" delim=";" default="<%=NamingService.getVMName()%>"/>
 <ie:param name="ATTRIBUTE" data="urlLocation,mime" delim="," default="*"/>	
 <ie:param name="GROUP_IN" data="holders" />
 <ie:param name="GROUP_OUT" data="cItems" />
</ie:webject>
...