Extend existing Cost Center migration cockpit template

According to concern requirements, customized fields specified arsenic Service line, BAU/Change and Locations has been added to the outgo halfway maestro information successful SAP nationalist unreality utilizing customized tract app. The fields are published. Status of the fields are enabled connected the negociate outgo halfway app and it's ODATA service. 

Assumption was migration cockpit volition automatically observe customized fields added successful the outgo halfway maestro information portion creating a caller migration task and subsequently adhd it successful the corresponding template. However customized fields are not being added to the template. Is it expected behavior? 

Furthermore, arsenic per migration entity documentation, customized tract enactment is not applicable to the outgo center. 

As we person concern request to adhd customized fields successful the outgo halfway object, and since the outgo halfway migration entity does not enactment customized fields, what is the alternate for uploading customized tract data?

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