The developers of the Islanders' arena project at Belmont are seeking the dismissal of a lawsuit by the Village of Floral Park.
The suits asks a judge to overturn all state approvals and stop construction on the arena, which is supposed to be completed in 2021.
The village also wants to restart the environmental review process.
Floral Park argues the private development of state-owned land will have harmful impacts on the environment, the economy and the quality of life.