No sorry, I was clouding the issue. My LA is particularly bad, setting their criteria cut of at ASD, but most haven't got there and set their criteria at AS. DLA is harder to get too.
Stupidly, DS is 'probably' aspergers but was too little so they gave him an asd 'for now', but when I asked when the next appointment was I was told there wasn't one.
You can tell the clinician that given AS is an ASD, and that AS is likely to disappear, you don't want ds without an out of date or unrecognised dx, so can she just reduce it to ASD and put 'very capable' lots of times in her report instead. That is one way. You can perhaps discuss it with her rather than demand, she might have some ideas of her own.
As I'm sure you realise the science isn't exact anyway.
But, don't get stressed about it, probably as coupled with spd will get you through most things. It is AS alone that might give you harder battles.