Longtime antagonists of the Miami Worldcenter project escalated their fight against the sprawling mixed-use development by filing a lawsuit challenging as unlawful a package of entitlements authorized by the City Commission.

The owners of Grand Central Lounge, a tenant on the Worldcenter site that’s involved in multiple legal battles with the venture’s developer, asked Miami-Dade Circuit Court to toss out the development agreement between the city and Worldcenter.