Msg#: 4607199 posted 11:31 am on Sep 4, 2013 (gmt 0)
Edit: Whoops! Whole long discussion took place while I had another tab open. mod_alias (Redirect by that name) doesn't do query strings. For that you need mod_rewrite (RewriteRule with [R] flag). Which, in turn, means that any existing redirects need to be changed over from mod_alias to mod_rewrite.
You can't hide a query string; you can only disguise it as something else, like