Because Blackbaud is in contract with GeoTrust (SSL provider), it is responsible for all aspects that fall under obligations of that contract: payment, renewals, maintenance, etc. Therefore, Blackbaud is unable to transfer and/or provide any of its previously purchased SSL certificates. 

This helps to keep the security of the SSL certificates limited to the organization that purchased them. Furthermore, it helps to limit the scope of those parties who are responsible for maintaining and renewing those certificates.