Remove #gf_33 from redirect forms URL carrying string data

I’m doing a redirect to a partners site carring data in the string -

GF seems to automatically add gf_33 to the form which is not wanted and causes 404 error on partner site. How can we revise the URL so it leaves this off? Can’t seem to find a setting for this

Because you have already opened a support ticket, I’ll leave the response up to them. I’ll leave this open though in case anyone from the community has anything to add.