The native AD MA for the FIM Sync service has long had an optional configuration section for preferred DCs, so that administrators can nominate an ordered list of preferred DCs to connect to for imports/exports. When this is used with Event Broker, especially in forests where there are delays in AD replication between DCs, the result can be that Event Broker detects a change before it is replicated to the DC from which FIM is connecting. This generally results in a missed change.
A feature to configure the AD agent exactly in line with that in the corresponding AD MA is suggested here.
Customer support service by UserEcho