I suppose the transfer of mortgage and ownership in whole to the WTS and the instituting mortgage sized donations by all congregations not only increases cash flow but would like allow the WTS more control of how the funds are allocated
bundling those mortgages to some sort of an investment management company could allow them to make credit payments significantly lower than their monthly cash inflow
instead of obligatory payments to credit coffers the WTS has created an enormous income stream from which to build their Armageddon bunker