Using Radia 4.2 I experienced the following strange behavior:
In a domain with multiple zservices, the BASE instance of the zservice class was changed (ZSVCMO from O to M)
Some of the zservices already had this property set to M and were effectively not changed (timestamp of the zservice object did not change either)
Nevertheless this resulted in the invocation of the update method of that zservice.
Is this a bug or an 'undocumented feature'?