OK, this is the fix for the search users query within the merge function (jeez...)

@@ -1010,7 +1010,7 @@ class Actions {
 				)
 				)
 				AND ((uml.meta_value LIKE '%$username%'
 				AND ((uml.meta_value LIKE '%$username%'
 					OR umf.meta_value LIKE '%$username%'
 					OR umf.meta_value LIKE '%$username%'
-					OR (STRCMP(umm.meta_value, '') != 0 AND umm.meta_value LIKE '%$username%'))
+					OR (umm.meta_value != '' AND umm.meta_value LIKE '%$username%'))
 					AND ums.meta_value != 'terminated'
 					AND ums.meta_value != 'terminated'
 				)
 				)
 				ORDER BY first_name, last_name";
 				ORDER BY first_name, last_name";