XF 2.1 Redirects for vBulletin (server 1) to xenforo (server 2)

[BubbaLovesCheese]

Hi,

Will I be able to use the XenForo redirects for vBulletin add-on in this situation?

1. vBulletin : Server A : URL - mysite.com/forum
2. XenForo : Server B : URL - forum.mysite.com

I'll be keeping both servers active after the import. (though I won't be using vBulletin anymore)

What would I use for : $dir = '/home/username/public_html/xenforo2';

<?php
// Enter the full path to your XenForo directory here:
$dir = '/home/username/public_html/xenforo2';

require($dir . '/src/XF.php');

XF::start($dir);
XF::runApp('XF301VB\Pub\App');

And does this also mean I need to keep the vBulletin folders and files forever on my Server A?

Thanks!