Project Importers maDMP - Cost Not Imported

[jmartinkova]

Steps how to reproduce:
In Project A (Root KM), create a project.
Within the project, add a cost and fill in title, description, currency, amount.
Export the data using the maDMP document template.
Import the data via maDMP into a different Project B (Root KM).

Actual Result:
The cost item is missing.

Expected Result:
The cost item should be imported including the details - title, description, currency, amount.