Airline preflight adjustment of CG for least fuel burn?

[Canuckbirdstrike]

Not common at all in the industry. The company I work for has been doing it for many years.
One thing to bear in mind is that many large long-haul aircraft have airborne CG management using fuel transfer to/from a tail tank. This works well until the fuel quantity reduces to the point where this tank starts to empty. Then the original planned CG will affect the fuel burn.
It can save milllions.