Azure Web role scaling not working when using Reserved IP

Hi,

I am using autoscaling feature for long time now on my web role deployment. I've recently create new deployment (with same web role bits) to use a reserved IP. Since that moment, the autoscaling is NOT working anymore. I can see many AutoscaleAction failures in the Management Portal Operation logs.

When I try to update the role instance count using REST call (via Azure Management Studio of Cerebrata), I get the following error:

Code: BadRequest
Message: A reserved IP cannot be added, removed or changed during deployment update or upgrade.

I cannot find anything about scaling and reserved IP on the net but I can't believe I am the only one in this situation ?!?!

Thanks for your help
Jean Bédard

Regards, Jean