We hinted at this yesterday, and we're pretty sure it has always been the Yankees policy - if you are a season ticket holder and want to change your seat location for 2010, you'll first have to pay your invoice in full. From the Yankees.com season ticket holder account:The New York Yankees are currently accepting upgrade requests for 2010 from all existing non-Premium Ticket Licensees. In order to submit a Request you must complete the following 2010 Upgrade Application. Your Request will only be considered if you either signed up for the 2010 three part auto charge payment program or your Ticket License Account is paid in full by the payment deadline date set forth on the upper right hand corner of your 2010 invoice. All Requests are subject to availability. Requests will be processed...

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