Creating compliant sitemaps requires URL encoding, but encoding some URLs breaks them completely.

Browswer should be able to handle, but if it can't then a search engine cant.

Example:
Not Encoded:
http://www.example.com/business/commercial-food-services/chef-resources/recipe-results.asp?ck=3&sk=2&ik=2

Encoded:
http%3A//www.example.com/business/commercial-food-services/chef-resources/recipe-results.asp%3Fck%3D3%26sk%3D2%26ik%3D2

I've never had a compliance issue before. Nothing in sitemaps.org to reference.

Thanks for the help!

[edited by: httpwebwitch at 9:01 pm (utc) on Feb. 26, 2009]
[edit reason] examplified URLs [/edit]