redirect to edit.php??

Hey,

Currently Im working on a plugin modification of simple wordpress newsletter. The plugin is loaded with “add_management_page” like:

https://localhost/myblog/wp-admin/edit.php?page=newsletter

for the user related things I have a form just like:

<form action="?page=newsletter" method="GET">
//the code...
</form>

when I try to delete one or multiple records using this form, Im getting redirected to edit.php and not to ?page=newsletter. Even when I put a line at top op the file to check the GET vars from the selected checkboxes(users), Im not seeying anything and get the same redirection again.

So, I dont understand how WP is handling the redirection in this case at all..

anybody ?

thanks!!