In that case, it is a change of authority. It goes from being a contribution authority to being a grant authority. To make that change, Parliament has to approve it. It is a transfer. There is no financial change, it is not an increase. It is simply a transfer between two authorities, but the amount stays the same.
Once again, that is one of the mechanisms, because Parliament has to approve these transfers. An explanation has to be provided and it is done in the document that supports the supply bill.
In the actual bill you will find that this is a transfer of authorities. However, the amount stays the same.