I have a couple questions about how EE works were multiple domains are in use and also about paths.
My client has cPanel hosting with one (.com.au) domain tied to the account and another (.biz) domain parked on the hosting account. At this stage I have the .com.au domain set throughout my EE configuration. I’m using the standard EE .htaccess to remove index.php
Both domains resolve to the EE site and it works but if you arrive via the parked domain (.biz) once you click a link it returns to displaying the primary (.com.au) domain in the address bar.
Does it matter to EE which domain you use and are there any performance issues with changing paths to the parked domain to use as the main site URL?
Secondly, under channel path settings does it make any difference if paths are set http://exampledomain.com/news or {site_url}news? I have them all set using {site_url} at the moment and it works fine. I just wanted to check if there are any reasons not to do this?