That's exactly the quote they told us, I copied/past it from the email. If you still insist to keep current changes please mention what are your reasons so I can contact you with RDFE team to discuss if this will introduce any issues or not.

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IContextChannel Casting
You can no longer cast your IServiceManagement instance directly to IContextChannel. You must call the .ToContextChannel() extension method instead. Context channel casting must be done specific to the IServiceManagement implementation that you are calling. In other words if you are using ServiceManagementClient. Protocol.* you must call ServiceManagementClient.Protocol.ToContextChannel() but if you are using the synchronous methods under ServiceManagementClient.* then you must call ServiceManagementClient.ToSyncContextChannel().
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