I got the answer that we all expected:
Thank you very much for your e-mail dated July 23rd 2011 in which you request a match between your Star Alliance Gold and Flying Blue Ivory statuses.
As per the Flying Blue General Terms and Conditions, two different Frequent Flyer programs cannot be merged.
Our promotional Status Match Campaign has come to an end on March 31st 2011. These offers are updated regularly, and you will undoubtedly have the opportunity to take advantage of them.
Should you require any further information, your Flying Blue team remains at your disposal either by telephone on (+ 44) 0870 24 29 242 from the United Kingdom or by fax on (+33) 1 58 68 68 00.