Update All Columns
This field applies only to non-transactional replication. In non-transactional replication, the system creates one record per data column.
Select this field if you want every column to be updated on the target site even if it was not changed by a user interaction on the local site. In most cases, this will cause a large number of unnecessary records to be generated and sent across the network, which may reduce system performance.
If the field is cleared, replication occurs only for the columns that have been changed. This is the recommended setting.