EXS 24 Logic Sampler Users Group

If I edit an EXS24 sampler instrument's sample (by clicking on 
the 'E'), save the sample close & then save the instrument editor, I 
find the sample no longer plays when the key is pressed. If I load up 
another instrument & then load back the one I edited - it plays 
again. So the saving of the instrument dosn't 'refresh' the current 
version in the environment. Anyone here know what is the point of 
such a feature?

G4 dual 1Gb Ram 
LAG 4.8 EXS Ver 
AMT8 
Motu 2408