Domain name change problem

I'm somewhat of a newbie to WP Multisite and BuddyPress. I'm building a community site for my internet broadcast network. I started installing everything on a spare domain... With plans to switch it over to my primary domain Got enough set up to familiarize myself with multisite and buddypress and thought hey...Let's switch it over now. Well...I made every possible change I can think of in the Dbase and WP. Yet my "Home" link will not change from to

I've searched in both the Dbase and CPanel and there are no more instances of "," anywhere.

I've disabled all the plugins...Changed themes...Still nothing

Is there some backend cache somewhere that I don't know about?

Thank you ...Michael J Loomis