Cause: No. of Periods Captured in BR setup is 1, so that only current period transactions are transferred to the BR module.
Resolution: Change the No. of Periods Captured to 2 or 3 or whatever number of periods need to be captured. As an example, if the batch was posted to the previous period, change the number of periods captured to 2 so that the current and previous periods are captured. Then run the Module Transaction Transfer process again.