I am making a shop for where I need to first create asub domain at the webhost, and there work with the Zen Cart webshop.

When all is set up and running fine, I will need to move the zen cart webshop from the sub domain to the main domain.

Meaning first: www.sub.example.com
And later move up to: www.example.com

What is the workflow, and which files/folders holds the links Ineed to change?