SOAP Attachment Streaming - GroupWise 14.0.1

Can anyone tell me what has changed with the attachment streaming process over SOAP? After applying service pack 1, my email archive can no longer archive attachments. The archive server shows this error: HTTP Error 400. Everything worked fine before applying the beta 14.0.1 update. I also had to update my DataSync server to resolve attachment errors on our mobile devices, but I cannot find any documentation on what changed. Thanks in advance.