We run BC v22.3 on-premise and use Master Data Management Setup to keep our master data synced across a large number of BC companies within the same environment, pointing all of them to the same master data company.
Master Data Management isn't updating records in the /subscriber/ companies that are pointing to our master data company. There are no sync errors, and the synchronization table logs show no failed syncs. The records simply don't update. The only way we can fix this is to completely eradicate the entire MDM Setup and redo it.
There is no event we can tie to this happening. Perhaps we've recently applied a config. pack. to update the master data company's COA or other synced tables, but we've taken no other action. We haven't altered the MDM Setup for the /subscriber/ companies, in any way.