.htaccess and _POST loses information on redirect

[eluser]ferex[/eluser]
ok, my problem is

I have a .htaccess file to redirect pages

because of that the _post files are empty

as derek jones said in topic 84230

Do you have any .htaccess in play? If you are doing a rewrite that redirects or a regular redirect,
you will lose POST data between page requests.

i want to know is there a way to keep the data in the _post files as well working with .htaccess files.

look to my site and see the variables in the form_validation are empty

my site

thank you.