Question about accepting transferred site and what's next

Hi all,

My designer has completed designing a new site for me, and he has transferred the site to me.

Now, I have accepted the site, I would like to ask,

I have an existing site on my domain, I am co-owner of this domain. If I connect this transferred site to my domain,

  1. Would it comppletely replaced all contents on my existing site on the domain?
  2. As co-owner, it is alright for me to accept the transfer and connect to the domain or should the site be transferred to the owner of the domain?
  3. the site is designed on Wix Studio, when I accept it, will I be able to edit it in Wix Studio?

Once again thank you for your time