"The original (1.5 million tonnes) came from Thomas and Pym, they thought it was a conservative estimate," Kirkham said. "My extraordinarily strong recollection is this was repeated to us on a number of occasions."
Berlic challenged Kirkham's version of events, saying she couldn't cite specific times when Thomas or Pym had referred to the target, which most likely came from NZX's own due diligence team.
Berlic put to Kirkham that during negotiations in the run-up to the purchase, Thomas had wanted the earn-out target reduced to 1 million tonnes. Kirkham replied that she had taken that as a normal negotiating tactic at the time.
Communication within the NZX due diligence team was also raised, with Berlic questioning Kirkham about an email from NZX's corporate counsel Rachael Newsome where she said the vendors were "being optimistic" about volume growth and she suspected "it would be another couple of years below 1 million tonnes."
Kirkham agreed with Newsome's views but said the three targets for that earn-out would give them further incentive if they missed the first opportunity of 1.5 million tonnes.
"We thought there was a range of things which might happen, at this point certainly we thought it might take a bit longer to get there," Kirkham said.
She accepted that NZX knew Clear had IT capability but rejected Berlic's suggestion that Clear didn't have much knowledge of the grain market.
"We knew that Clear had IT capability, we knew they'd built the grain platform, we knew Pym and Thomas didn't have grain markets as their background," Kirkham said. "We were told by them they had spent a long time getting up to speed with understanding the grain market in a short space of time - we understood they'd hired in some experts."
The trial is expected to last up to eleven weeks and has so far cost NZX between $9 and $10 million.