I would phone your carrier and ask them. Here in the UK we had to confirm with BA that we wouldn't be using an outbound ticket on a flight, and they confirmed they would have made the return invalid if we hadn't phoned ahead.
But it might vary from carrier to carrier, so phone and you'll know for sure.
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Date: 2007-06-06 03:16 pm (UTC)But it might vary from carrier to carrier, so phone and you'll know for sure.