They advised that using separate processes could "place an undue public spotlight on the Māori constituency issue. This can be divisive."
Councillors voted in April to include a Māori constituency in next year's local body elections.
Council officers said wider public engagement back then had allowed both sides of the debate to have a say in a manner that wasn't divisive.
But the officers' report said iwi representatives instead wanted future engagement on Māori wards to be focused on "people who are affected by the decision."
The iwi representatives sit on the council's Consents and Regulatory, and Policy and Planning committees.
They wanted public input on Māori wards to be restricted to consultation with iwi, hapū and whānau.
"Iwi representatives felt that only the Maori community are affected by the provision not the general electorate, hence limiting consultation to them," the advice said.
Councillor Charlotte Littlewood said it was important to bring the wider public along on such issues, but that the council should include iwi views in its submission to the Department of Internal Affairs.
"I very much respect and understand that our iwi representatives have given that view, and I think it is important that we reflect that view in the comments section."
Councillors agreed, so the submission would now include the iwi representatives' views, but continue to call for wider public consultation on Māori wards as the regional council's preferred option.
