I'm planning on moving one of my forums from a subdirectory /forum/ to forum.mysite.com. I plan on setting up a 301 from /forum/ to the subdomain. When I first started my site, it was a vBulletin site, so I've got the XF redirect scripts, etc. in place. Do I need to make any changes to those or will the 301 be sufficient? I'm trying to minimize any potential issues.