Is a DTP mandatory in order to load into Write-optimized DSO ?

Question

I'm wondering if a DTP is mandatory in order to load data into a WO-DSO.
Reason: in BI7 i have a 3.x load process of order item data:
2LIS_11_VAITM -> Transfer Rules -> Comm.Area -> Update Rules -> standard ODS.
I now wanted to load the same data from 11_VAITM into a WO-DSO. I actually simply created the WO-DSO using the template of the standard ODS. THis means that the key fields of the WO-DSO are Request#, Datapak-is and Record#. The semantic key is identical to the key used in the standard ODS.
I then created the same Update Rules from the InfoSource goint into the new WO-ODS and last but not least I simply changed the InfoPackaging saying that the data should be now loaded into both the standard ODS and WO-DSO.
2LIS_11_VAITM -> Transfer Rules -> Comm.Area -> Update Rules -> standard ODS
                                                                         |-> Update Rules -> WO-DSO
What happened is quite annoying and nor understandable right now.  Using this process I always get only one record into the new WO-DSO (it's always the first record of the data flow), not more. The PSA clearly shows me all the records with different record-numbers per request/datapak, therefore the key elements of the WO-DSO are clearly unique.
However, as there is always only one record appearing the new WO-ODS, I'm really wondering if the overall process isn't correct at all and that I actually need a DTP to load into WO-DSOs.
Am I right or are there other ideas related to my problem ?
Thanks

Answer 1

As far as I understand in order for you to use transformations, you need to use DTP. Infopackages will not work.
But iyour case u are using update rules, then it should work.
But because the WOD is a new technology, you need to only use DTP to load from PSA may be.