Hi Thorben,
I agree with that.
I would recommend to use the standard workflow, starting the normal change in status created, but if it is not possible. The you need to make sure that the actions executed in created status are copied into the "in development" status.
See the following IMG path and compare your transaction type with SMMJ:
SAP Solution Manager
Capabilities (Optional)
Change Control Management
Change Request Management Framework
Make Settings for Change Transaction Types
Also, make sure that the PPF actions are being executed:
1. Go to Transaction SPPFCADM
2. Select application CRM_ORDER
3. Press button Condition Configuration
4. Select action profile SMMJ_ACTIONS
Cheers,
Fernando