The All Blacks Test against Wales in Cardiff in November is at the centre of legal action.
The four Welsh rugby regions are set to take the Wales Rugby Union to court over player availability for tbhe match.
Regional Rugby Wales, which represents the Ospreys, Dragons, Llanelli Scarlets and Cardiff Blues, claim the WRU hasn't been granted permission for the players to be released.
The November fixture is outside the International Rugby Board's window.
Whle the Welsh union won a similar legal battle over player-release in November last year it had been hoped a new participation agreement would settle the matter.
But the CEO of Welsh regional rugby Stuart Gallacher says despite months of protracted talks a revised participation agreement has yet to emerge.