fetch the correct line to rebalance when previous line doesn't have usage (on edge case like balance ends) and support slowness case (usagev>0)
fetch the correct line to rebalance when previous line doesn't have usage (on edge case like balance ends) and support slowness case (usagev>0)

BillRun/system,BillRun/system,BillRun/system,BillRun/system