Got lightweight concrete tile roof. Should I replace underlayment before installing solar?

HighTech FinTech researcher, university lecturer & Scholar. He is studying his second doctoral degree at the Hague International University. Studying different fields of Sciences gave him a broad understanding of various aspects of life. His recent researches covered AI, Machine-learning & Automation concepts. The Information Technology Skills & Knowledge gave his company a higher position over other regional high-tech consultancy services. The other qualities and activities which can describe him are a Hobbyist Programmer, Achiever, Strategic Thinker, Futuristic person, and Frequent Traveler.