Newly Deployed Forge Site Defaults to Another Forge Site

I have the following scenario:

1. One server - provisioned by Forge;
2. A "site.com" on forge (works well);
3. A "beta.site.com" (works well);
4. A "differentsite.com" - url resolves to "site.com". Why?

The first "site.com" and its "beta.site.com" resolve correctly; the url's go to the correct sites.

I just tried to deploy a "differentsite.com" and the deployment went well, except that when I go to the url, I get the "beta.site.com" and not "differentsite.com" - even though "differentsite.com" successfully deployed. Not sure why. This problem occurs whether I use add in another db or not.

The nginx file points to the "differentsite.com", so I'm not sure why this is occurring.

Any suggestions. Thanks for the help.