For example in my Confluence Publisher configuration::
....
Space FIX
OK: Fixnetix Development
Page DBX+Dev+Releases/DBX2+Prod3.1.0.$SVN_REVISION.jmg_testing
.....

Which should be created under:
http://jira:8090/confluence/display/FIX/DBX2+Dev+Releases

But is actually created under:
http://jira:8090/confluence/pages/viewpage.action?pageId=28870270
(Which is the root of the FIX space.)

This is irrespective of whether build-time parameters are used.