Am I correct in assuming that in a multisite/multistore/multidomain setup, the primary/base domain is the one that submits info to the payment gateway?
So, if I had Site X (main site) and Site Y (secondary site).. if someone purchases something on Site Y, will it redirect them to Site X at all? Or does it just use the backend code to submit to the payment gateway and keep Site X ‘invisible’ to the customer (as in, their browser stays at Site Y and never redirects to the main Site X)?
And most importantly will the payment gateway be receiving the data from Site X? Or Site Y?
Hopefully I explained that well enough!