Trade Minister Todd McClay said today that New Zealand would be pushing for the minimal number of changes, which had been agreed on by the 11 remaining countries.
Minimal change means altering the trigger by which it enters into force.
Officials met in Japan last month and will meet in Australia next month to prepare the proposal to put to leaders in November.
McClay said it was imperative that New Zealand continued to show leadership on TPP to remain competitive.
Japan had just concluded a free trade agreement with the European Union which gave better access to European exporters than New Zealand currently had.
"Japan has also just announced it will a apply a 50 per cent tariff on all frozen beef import from countries it doesn't have an FTA with."
But the TPP would reduce tariffs on New Zealand beef exports from 50 per cent to 9 per cent.
Prime Minister Bill English told reporters he was optimistic that TPP11 would get the green light in November.
"Having Japan in there, as the third-biggest economy [in the world] is a pretty important part of taking it forward without unstitching the original agreement," he told reporters in Wellington.
"Six months ago, no one thought TPP 11 could happen but we've got this far. It has exceeded expectations.
"Given the determination we see among countries to almost prove a point about free trade, we are optimistic we can get there."
Winston Peters, the leader of New Zealand First, which along with Labour and the Greens opposes TPP, criticised the Government for going ahead with the deal despite the withdrawal of the United States, without consulting the New Zealand Parliament or people.
"This is government by tyranny and not for or on behalf of the people. Secrecy, scheming and arrogance are not what New Zealanders want."
The TPP11 are New Zealand, Australia, Japan, Malaysia, Singapore, Brunei, Vietnam, Peru, Chile, Mexico and Canada.