mumbai nov 15 reuters  the indian rupee slipped between gains and losses in choppy trading on tuesday while the usdinr overnight swap rates declined fuelled by cash dollar outflows traders said the rupee dropped to as much as 814425 to the dollar adding to its decline in the previous session the local unit had climbed to a sevenweek high of 805200 on monday meanwhile the overnight usdinr swap rate has fallen to 046048 paisa importers and exporters access the cash swap market to swap the dollars traded in the spot market a trader at a private bank said the cash dollar outflows via a large foreign bank explains the move higher in spot and the fall in the overnight cash rates over the last two days for a cash dollar outflow an importer will use the buysell usdinr swap to take the delivery of the dollars it bought in the spot market on the same day the buysell swap thanks to the dollar outflows has pushed the implied overnight rupee rates lower than the domestic call rates at a swap rate of 046 paisa the implied overnight rupee rate is just above 5 the weighted average treps rate is 570