A source said the disputes are centred around the selection of the seven members who represent mana whenua and two members representing mātāwaka - Māori living in the Auckland rohe who are not mana whenua.
It is understood a person nominated on behalf of mātāwaka was declined because the selection panel said he had whakapapa to Ngāti Whatua. He was disqualified, despite never holding a position within that iwi and actually applying for a seat on behalf of Urban Māori.
The Herald understands Ngāti Whātua Ōrakei are also not happy about the IMSB selection panel process and were not even notified about yesterday's hui.
The source said members also had concerns over the registrar who runs the election process, Paul Majurey, as he holds several influential positions.
The election processes were administered by Majurey's legal firm.
Majurey is the lawyer and Treaty Negotiator for the Marutūāhu group - who also have two seats on the IMSB - and he is currently being investigated by PwC for conflict of interest at Panuku, where he is Chair.
This is not the first time the IMSB has been taken to court by Urban Māori.
In 2013 when the now Māori Development Minister Willie Jackson was not chosen as one of the Auckland Independent Maori Statutory Board's two mātāwaka (urban) representatives, Urban Māori lodged court proceedings.
They sought a judicial review of the appointment of Tony Kake who was named as the second mātāwaka representative, alongside John Tamihere.
In 2015, the High Court found the selection process was flawed and ordered the selection body for the board to stand Kake aside, before holding a new election.
"As a consequence, the entire selection process was unlawful and the judge correctly set aside Mr Kake's appointment to the board. Our conclusion has obvious implications for Mr Tamihere since his appointment suffered from the same defect in that it was a consequence of an unlawful process," the Court of Appeal judgment said.
"However, we cannot set aside his appointment."
The Court of Appeal decided the board did not follow the legally required process of taking into account mātāwaka views.
But by the time a new election process was put in place, the three-year term had passed and Jackson had viewed a return to politics.