Does the data need to be Transformed? You can do a Time Member Filter on a Forms task, and have the Forms task appear only in |WFYear|M12. If feasible to get the data in a format to be uploaded by way of a Form template may be an option to address that, however Form import templates don't transform the data to the destination metadata members in your Cube and Dimension Library.
Perhaps leveraging an alternative approach might be viable..
Yes, data needs to be transformed. I want to do an import and load step only for Month 12 to reflect Year End Adjustement. Unfortunately, it cannot be done through a form.
