MSP New Driver: For tasks with no assignee ETCs are being zeroed out

Document ID : KB000095929
Last Modified Date : 22/05/2018
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Issue:
In the Microsoft Project (MSP) New Driver, ETCs (Remaining Work) are zeroed out in MSP for tasks without assignments. When you save a project back to PPM, you'll also see that in PPM, the ETCs display as 0 in PPM for these tasks.

The behavior in the Legacy driver is slightly different, while ETCs  show as 0 for these tasks in PPM, in MSP, the ETCs remain when opening the project back in MSP.
Cause:
This is working as designed in the MSP New Driver, as PPM requires at least one resource assigned to the task to keep ETCs.
Resolution:
In order to keep ETCs from being deleted in the MSP New Driver, for tasks without assignments, add a "dummy" role to the task, then once a resource is determined, the role can be replaced with the resource. 

To replace the role with a resource within MSP:
1. Take note of the ETC/Remaining Work on the task in MSP
2. Remove the role from the task (which also deletes the Remaining Work)
3. Add the Remaining Work back to the task in MSP
4. Assign the applicable Resource(s) to the task in MSP
Important: If the resource is allocated at 0% to the project, extra steps are required to ensure the ETCs are not lost if you are not mapping to Max % Load in PPM. See KB: KB000095395 for more details. 
Additional Information:
Reference KB000095395 - MSP New Driver: ETC Hours missing for tasks with assignments when opening a project
Reference KB000071385 - CA PPM and MSP integration - List of Knowledge Documents
Reference KB000015956 - CA PPM and MSP integration known defects - Support Technical Document Index