|In your RewriteRule that "rewrites" you detect a friendy URL and rewrite it to a filename and parameters internally inside the server. |
This rule MUST have an [L] flag to prevent mod_rewrite going off and doing other stuff with this request.
A request for
is already being internally rewritten to
in the correct way. This is good.
In order for a request for
to be internally rewritten to
you also need to add the [QSA] flag to ensure the originally requested parameters are re-appended to the rewritten request.