Session over from nonsecure to secure

[Mike]

I have noticed that the id of my session object changes
when I switch from a non-secure to a secure connection.

What I'm trying to do:
I have a cookie that is built on the non-secure side of
things. What I need to do is to switch to a secure
connection and then later on while still in that secure
connection delete the cookie that was created on the non-
secure side.

Also it would be beneficial if I could remove or clear
all items in the session of the non-secure side from the
secure side to do clean up.

From documentation that I have read it seemed that the
session was tied to the instance of the browser, so is it
that when switching to a secure connection a new instance
is created, or is it something else that is going on?