How to use "Open Replicator" to replicate data incremental?

Dear All,

How to use "Open Replicator" to replicate data incremental?

I used below command to create the replication.

" symrcopy create -name ORTest -copy -push -hot -differential -f ORTest.txt ".

The " ORtest.txt " content :

#Source_device_id Target_device_id

symdev=0917:07A0 symdev=1321:021A

I used below commnad to enable the replication and ran it successfully.

" symrcopy -session_name ORTest activate -noprom "

I tried to use below command to replicate data incremental.

" symrcopy -session_name ORTEST recreate "

" symrcopy -session_name ORTest activate -noprom "

It can run it successfully, but the time cosuming is the same as first replication.

Are above commands correct?

Thank you for any help.

Dennis