301 Redirect for Query Strings

[Mig]

OK, I have a new redirect question. I found that for pages with a query string, the normal 301 redirect doesn't work, so I need a couple of rewrite rules for that, urgently.

Our old website was really badly made, so almost every page is like http://www.example.com/more_info.asp?current_id=39. I have a need for two types of rule:

1. To redirect a specific ID to a specific page.

http://www.example.com/more_info.asp?current_id=9

// To this:
http://www.example.com/page.php

2. If possible, to redirect a range of IDs to a specific page.

http://www.example.com/more_info.asp?current_id=10
http://www.example.com/more_info.asp?current_id=11
http://www.example.com/more_info.asp?current_id=12
...
http://www.example.com/more_info.asp?current_id=19


// All of the above to this:
http://www.example.com/page.php

[Mig]

Does anybody know how to do this?

[Mig]

Well, it took me days of searching, but this is how to 301 redirect a URL with a query string (and lose the query string):

RewriteCond %{QUERY_STRING} ^id=78$
RewriteRule ^oldpage\.php$ http://www.example.com/newpage/? [R=301,L]

This will redirect as follows:

http://www.example.com/old.php?id=78
http://www.example.com/new/

It's essential to add the ? at the end of the new redirect URL in the rewrite rule. If you omit this question mark, the old query string will be carried over to the new URL. I still can't figure out why though; the purpose of a question mark here is confusing to me (any answers greatly appreciated).