0CO_OM_OPA_8 & 0CO_OM_OPA_7 Delta

I need to set up delta process for 0CO_OM_OPA_8 & 0CO_OM_OPA_7 Extraction.

Both Extractor process delta with: ADD Additive Extraction Via Extractor.

Can i initialize the delta and load directly to Infocube?

Do i have to use DSO layer?

The option "Initialize with data transfer and Initialize without data transfer in the Infopackage for 0CO_OM_OPA_7 is not available. .

Thanks,

Vinod