Stripping query string except from specific URL

[Dave Wreski <dwreski@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>]

Hi,

We have a situation where we need to strip a query string from all URLs except ones matching a particular pattern. However, when I try the rules below, it redirects to the homepage for some reason.

In this example, I'd like to strip off the query string from all URLs except those involving /resources/blog:

RewriteCond %{REQUEST_URI} !/resources/blog
RewriteCond %{QUERY_STRING} ^start=
RewriteRule (.*)       https://guardiandigital.com$1    [L,QSD]

What am I missing?

Thanks,
Dave