Need to migrate from an expiring 3 Seat License seat to a 3 Seat license inactive last 8-9 months

I have one three seat license that expires May 7, and I have another that says all of the seats are used, but it has been inactive for 8-9 months. Two seats were used for new laptops that were returned, and one seat was used in on a computer that died 9 months ago, all within a month or two.  How can I migrate to the unused license that expires in July?

 

Also, for some strange reason, my renewal quoted me a price of over $1,000 for a license  (I saw the word India in an out of place area, but my address is USA).  I purchased a 3 seat license to use when my 3 seat license runs out.   How do I migrate to the product key from my purchase, when my 3 seat license expires in July?

 

I paid $150 for a customer support call that resulted in customized settings, so I don't want to uninstall /reinstall.

 

I greatly appreciate any help.

 

Thanks!

 

Richard