BUS2012 subtype created do not populated all the fields

Hi all,

I have a scenario where i have created a subtype of BU2012.

In the workflow start events have set 2 triggering event.at a

1. BUS2012 - ReleaseStepCreated (this event is called via standard whenever PO is created in system) - binded to workflow container of type BUS2012

2. ZBUS2012 - ZRetriggerRelease (this event is called in an exit - when a released PO is changed such that amount exceeds a particular value ).-  binded to workflow container of type BUS2012

Here ZBUS2012 is a subtype .

In a workflow at a place i checked if PO creator is same as that approver .

For this when workflow is triggered via event 1 here in BUS2012- Created By field is populated with the user id who created the PO. Infact could see some more attributes filled with values apart from the ones we can see in SWO1 for BUS2012.

But when workflow is triggered via event 2 . these fields are not present in ZBUS2012 and so the values are blank in BUS2012. Would be grateful if any one could throw some light on this.

So from where these addition attributes come for BUS2012 but not its subtype ??

Thank you