The customer needs to search Quickr and WCM content. There is one collection having each type of crawler.
I had some problems configuring WCM search. When the collections had both pre and post filtering security activated there were no WCM results displayed. This was traced to a problem with the Distinguished Names of WCM objects in the collection. During the course of the project the LDAP structure evolved. I used the WCM member fixer tool to update the DNs and this corrected the problem.
Another minor issue occurred concerning the use of disk space. I had the delta build indexer scheduled to run every night while the main build indexer was not scheduled. Eventually data in the delta index directory filled up the available disk space. The solution is to regularly run the main build indexer. When it runs it initializes the delta index directory, deleting old files and freeing up disk space.
IBM support helped identify and correct both these issues.