Performance period before project registration?

My client is an electronic product manufacturer and their corporation headquarter is planning to pursuit LEED EBOM certification. The client has not registered their project in GBCI because they are still collecting energy data for EA P2 and EA C1. Of course, my client is not sure if building can achieve the requirement of EA P2 before complete energy data collection and analysis. Currently the show room is remodeling because new products will be launched. The remodeling contractor performs their tasks by following LEED related required. If the client decides to pursuit LEED EBOM and registers their project to GBCI, can the start date of performance period for this credit be set before LEED registration date?