When we perform Writeback to Budgetary Control Cube, how to clear the data before we load?

Summary:

Is there any way to clear budgetary control cube data before performing write back from the Planning

Content (Business Use Case):

We are pushing our approved budgets from Planning to Budgetary Control Cube. There are cases where we are supposed to clear Budgetary Control cube data before performing this load - to make sure that there is no unwanted data present in the target system. This might be because of the last minute changes or because of remapping of projects.

As per my understanding, at present clear option will work only for the GL sources not for the Budgetary Control source. Any workaround is much appreciated.