Hi Luo,
please see my replies above. Replication timing is bound first to the selected option within the edition and second (if the edition allows the same) to the selection within a CR.
Some outbound implementations contain a check whether the replication is valid or not - e.g. if your example refers to an account, replication is not valid due to the fact that the account master in SAP ECC is time independent. If it is a cost center, replication is valid, since cost centers support time dependent data in the backend.
Best regards
Michael