Sales order cancellation with points comsuption

issue is the following :

As a consumer, i create a sales order in WCEM with points consumption :

i "give" 8 points to get my stuff -> fine.

Then, i decide to cancel this order, still in WCEM, as delivery is late ..

-> i don't have any member activity being triggered to get back my points ..

should i find a way to create a "Points return" activity ? how ? with an action ?

Thanks for any feedback

Regards