parameters not updated on re-publish

RS2005 sp1 - I have a report that was published to the report server. I needed to make changes to some of the parameters. I changed them to be INTERNAL. When I re-published the report from visual studio to the server (selecting overwrite item if exists) - that INTERNAL parameters were still showing and active when I chose VIEW report. Then I tried the Upload File from the report server to see if that would behave differently ... but I got the same result. Can someone tell me why this is happening?

I am having the same problem, if anyone can help I would appreciate it.

I recognize that deleting the deployed report fixes the problem but for a fast paced environment that is not very efficient.

We are on 2005 SP1.

Thanks,
Eric