Maungatautari Ecological Island Trust co-chairman Tony Wilding said returning to the previous structure introduced in 2006 had come as a result of meetings with the adjacent landowners, mana whenua and volunteers.
The original 2006 trust deed reflected the intent of the project, which was to be a partnership between iwi and landowners and supported by the community, local and regional councils and the Department of Conservation, he said.
The ambitious project nearly fell over this year when 14 rats were found inside the 3400ha wildlife park and when three landowners blocked access to the 47km fence from their properties.
Key funders were also against the new structure. Philanthropist Gareth Morgan waded into the battle by withholding a $1 million interest-free loan towards building a tree-top walkway because the new model was "blatant opportunism".
Mr Wilding said the board still had a number of issues to resolve which would take time, but was determined these would be overcome. He said the good news was that kiwi were still breeding there.
The trust would do everything possible to make the project a success, he said.