Synchronizing missing data on publisher and subscriber database tables (insert and update only missing data on destination) in sql server

In my case, we have some extra data rows in few tables on subscriber database, which I need to retain.

I tried tablediff.exe utility which is traversing all the tables and creating Insert, update and delete queries in single SQL script, but I just need to insert/update and not delete.

I don't want to manually delete 'delete' statements from tablediff.exe generated scripts. I am looking for an option which does not look for data rows to be deleted and concentrate on insert and update rows.

If it is not going to work I have to look for the dynamic query using 'except'.