Turning of Accidental Cancellation moving from a Double Sharp to a single sharp.

[James]

Hello,

After doing some '\transposition a bes { ... }' I noticed that LilyPond 
will add an additional 'natural' sign along with a sharp sign when a 
'Double sharp' note drops to a single sharp note in the same bar.

While I am not convinced that that is 'standard' notation practice 
(technically accurate I am sure - but I have not been able to find this 
in my copy of Read and I only skimmed my stone but there was nothing 
obvious there), is there a way to turn this off rather than manually add 
all the sharp and flat signs manually?

Regards

James