FAMIXAssociations being SourcedEntities have a 'sourceAnchor' instance variable.
However it redefines the method sourceAnchor :
^ self from sourceAnchor
I am sure there was some good reason to do this, but to me this is counter intuitive and something should probably be corrected.
(in practice I spent from 11pm to 1am yesterday looking for a bug that did not exist :-( )
nicolas