'Site' used in new tickets is wrong ?

'Site' used in new tickets is wrong ?

I.e. user 'test' is assigned to 'Site' Dallas.
 
User 'test' logs in and creates a ticket, it sets the site to 'Corporate' (which is the default if no one has a site).  The site field is very important for us to know which office to call for a user, we have the correct information listed for each user but new tickets aren't being created this way.  Help !

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