Rewrite rule for incoming urls

Question

Part 1: How do I get people visiting my blog with http://example.com/archives/14073 redirect to http://example.com/?p=14073.

Part 2: What about when the incoming link is like this: http://example.com/archives/14073?utm_campaign=Foo&utm_source=foo.com&utm_medium=email

Answer 1

This solved both parts:

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteRule ^archives/(.*)$ /\?p=$1 [R=301,L,QSA]
</IfModule>

The QSA flag maintained the query string automagically.

Most importantly, I had to put it above the existing WordPress rewrite rules in order for it to work.