In Adobe Campaign v8, incremental replication relies on a field that tracks when records were last modified. The LastModified field is specifically designed for this purpose, allowing the system to identify and replicate only those records that have been altered since the last replication cycle. This approach minimizes data transfer by only sending updated records instead of the entire dataset.

Using LastModified ensures that the replication process is efficient and that all modifications are accurately reflected across different instances of Adobe Campaign, particularly in distributed environments. Fields like CreationDate are insufficient for incremental replication as they do not track updates, and InternalName does not provide any time-based tracking functionality.