Well, I am not sure if I fully understood your problem … some more details could help …
Just to repeat:
You replicate data from one server to another. There, on the target server (or subscriber) you want to write this replicated data into some NAV tables. Right? Wrong?
What I could imagine is this:
After finishing the replication, you could start up a NAS service (e.g. by using the SC.EXE utility). This NAS could run some code to import the data from the replication-tables, e.g. using MS ADO or Linked Tables etc… Here you have the chance to use the NAV site triggers …
But as stated: please give us more info!