I have a Merge replication that sources on a subscription from a Transactional Replication. I know that the triggers regarding the Merge replication are not fired by 'bulk inserts':
Microsoft: When data is loaded into tables using the bcp Utility or the BULK INSERT command, by default, the merge replication triggers that maintain tracking data in the MSmerge_contents system table are not fired.
For establishing the transactional replication a snapshot is needed. Question: is the snapshot a bulk insert; will it not fire the merge triggers?