g1smd - 3:34 pm on Nov 28, 2012 (gmt 0)
That's a kludge and not guaranteed to stay working.
That rule is an internal rewrite. If there is a redirect happening after that, one that exposes the previously rewritten path then it is likely that you have rules in the wrong order or you have rules that interfere with each other because they are from two different modules. The rules in the htaccess file are parsed in "per module" order and so you MUST convert all of your mod_alias rules to instead use mod_rewrite and you MUST fix the rule order as described above.