/order?step=1 how delete (?step=1) ?

[Kerm]

I have link "/order?step=1" it's order-addresses page, how delete "?step=1" from link?

 

I try in .htaccess:

 

RewriteRule ^order$ /order?step=$ [QSA,L]

RewriteRule ^order /order?step=1 [QSA,L]

 

That don't work...

 

also from shopping-cart when i go to authentication page i got that link:

 

/authentication?back=order.php%3Fstep%3D1

 

and

 

/modules/cashondelivery/validation.php

 

and

 

/modules/bankwire/payment.php