Hi,
ReDJ uses MySQL regular expression and:
REGEXP is not case sensitive, except when used with binary strings.
If you need a redirect where source and destination differs only for case, you need to patch ReDJ plugin.
Open \plugins\system\redj.php and change line 97 from:
$db->setQuery("SELECT * FROM #__redj WHERE (" . $db->quote( $currenturi ) . " REGEXP fromurl)>0 and published='1' ORDER BY ordering");
To:
$db->setQuery("SELECT * FROM #__redj WHERE (" . $db->quote( $currenturi ) . " REGEXP BINARY fromurl)>0 and published='1' ORDER BY ordering");
Regards,
Luigi