Is_Search Variable In Advanced Order Search In Orders > View Orders

Hello,

I want to remove the below parameter in red from results when using the advanced order search functionality on the orders page. I'm not able to find where i can do this, can anyone support please?

https://sezonier.com/admin.php?is_search=Y&cname=&email=&phone=&total_from=&total_to=&dispatch%5Borders.manage%5D=Search&issuer=&period=A&time_from=&time_to=&tax_exempt=&order_id=&company=&credit_memo_id=&invoice_id=&company_id=&p_ids=&product_view_id=0&gift_cert_code=&gift_cert_in=B%7CU&hint_new_view=Name&security_hash=63771de69879376669b79a755a965b38

Thanks,

Kyle.

It is located here

design/backend/templates/common/advanced_search.tpl

But please note that this template is common for all search forms