The CPC Strategy blog reported Bing has migrated the Bing Shopping Merchant portal to the adCenter portal. This is a new Merchant Self Service Portal linked to Microsoft's adCenter, making it easier for adCenter customers to serve up their product data to Microsoft.
He also started a WebmasterWorld thread where he asked:
Just curious of your thoughts about Bing Shopping's merchant portal migration to Microsoft's adCenter. There is now seamless integration and data feed optimization reports to utilize, seems much easier to work with than the old system on Bing Cashback's merchant center.
He has additional screen shots of the process and reports at his blog.
Forum discussion at WebmasterWorld.