URGENT... redirecting to old url

have a test site as a backup for a promotion and the main site went down,
I need to roll out the test site

but the test site is re-directing to the main URL wiht the problem

the live site is correct and the forced url is correct in the shop config but after completing to authorize it redirects to the main site

this is really urgent

The redirection URL is not in the configuration of HikaShop but in the options of your authorize.net plugin via the menu System>Payment methods.

Bless you!!!!!!!!!!!!!!