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