The folder browser that appears on top of the searches in the editorial tab of the Shell main tab is defined in the ted4_TabItems.xml file.

Look for:

         <l:FolderBrowser

           Grid.Row="1"

           ConditionPath="[folderObject.folderRef]"

           SearchCriteriaTarget="{Binding Path=SearchCriteria, ElementName=EditorialShellNavTab}"/>

this is the folder browser. Removing the above and adding:

         <attribute path="[folderObject.folderRef]" op="In">

           <ui mode="Normal" labelPosition="Above" >

             <template kind="ExaleadTree" opMode="Hidden"/>

           </ui>

         </attribute>

to the shell4_Config.xml EditorialShell searchObjectUI should make the tree to use Exalead searching. All the other attributes in the searchObjectUI must be of Exalead kind.

Note: since build 2711, all ExaleadXXX templates are renamed to FullTextXXX, and the ExaleadFullText became FullText.