If your rewrite maps are causing you issues, you should consider encoding your urls correctly.
An &
in the URL (in either the key or the value) should be replaced with an &
.
<add key="/contenttemplates/news.aspx?id=8589976277&LangType=3081&CurrencyType=156" value="/" />
would then become:
<add key="/contenttemplates/news.aspx?id=8589976277&LangType=3081&CurrencyType=156" value="/" />