This documentation addresses cash flow that is related to an investment manager but is directly paid from/to an operating account. This documentation will show you how to record investment income (or manager fees) to the manager it was either received from (or paid for) and then balance the net cash flow between the manager and the operating account.
Select the manager that has paid out the income to the operating account. This is set up for some investment managers as a way to address cash shortfall that will arise when spending is taken. The interest/dividend income is recorded within the manager and then entered as negative cash flow (because it is not reinvested within the manager).
Once entered, click SAVE VALUES.