We are a subcontractor with an agreement to provide services during the Project Development Phase. After requesting preliminary notice information, the contracts manager for the prime contractor noted that since this is a PROJECT DEVELOPMENT PHASE project, the preliminary requirements are not the same as actual construction. They are requiring us to provide lien releases. How do we protect ourselves for this phase of services/work? File a preliminary notice for this phase/type of work? Then file again if/when contract work is secured for the actual project?