Baseline HVAC for Major Renovation keeping existing chiller

Hi, we are working on a project for which our client would like to pursue a Major Renovation certification. All air handlers will be replaced. However, the client would like to keep the existing chiller. For new construction projects, our climate zone (1A) requires the baseline HVAC system 8 - VAV with PFP Boxes and 2 water-cooled screw chillers. Would we be allowed to use our existing chillers (2 air-cooled chillers with lower CoP than the ASHRAE 90.1 reference) for both our baseline and proposed building models since this equipment will not change? Thank you.