Installed in subdomain, but want it to just show .com address?

For ease of transferring the site from a new domain, I installed WordPress on my main sites subdomain:

i wanted to move kashmirwhitegranite.org to my new host.

my main URL for new host is milesw.me

In order to transfer images through “import” feature, I installed wordpress at kashmirwhitegranite.milesw.me

Now that I switched DNS over, I go to kashmirewhitegranite.org and if I click an internal page it goes to kashmirwhitegranite.milesw.me

Is there a way to fix that or do I have to reinstalled on the actual domain?

Thank you!