In one of my webshops I had a new payment system integrated. Now I want to insert in into another of my webshops. But how do I do that? I have checked for changed files, but the only changed file is the payment system file. How do I make sure that it shows on the payment system page in the new webshop when I have copied the file to it?
I suppose I need to do some changes in the database or something, anyone knows how?