Lost Session When Moving From Http to Https

I am having an issu开发者_JAVA百科e where moving from http://mysite.com to https://secure.mysite.com causes the user to lose their session information. What would be the best way to deal with this? Thanks

I think you can use the SQL Server to keep your Session. This will be helpful Configure SQL Server to Store ASP.NET Session State

The session is being lost because the url is changing from mysite.com to secure.mysite.com Is it possible to keep the url the same and just use the secure https protocol?