I have my archive/ set to rewrite to sitemap/ in vBSEO CP.

I have noticed spiders still showing the url they are following is archive/xxxx in whos online.

I also see them seeing threads as showthread.php as the URL they are following.

If i have archive/ blocked in my robots.txt am i effectivly blocking them using my sitemap or would sitemap/ have to be in the robots.txt to do that.

Basically does blocking an old dynamic url effectivly block the rewritten ones also?

Like if i blocked showthread.php would it stop my rewritten threads being indexed?

Just trying to understand bots better.

Thanks.