Deal to Project Mapping

• I am afraid that I will lose my data if I convert a Deal to a Project. What should I do?
• What are the benefits of mapping the fields of a Deal to a Project?
• I can see a few fields that are already mapped by default. Why is that?
• Can I delete the fields that are mapped by default in the CRM?
• How do I add a mapping?
• Can I add any field from Deals as a part of field mapping?
• How do I modify a field mapping?
• Can I delete a Deals to Project mapping?
• How do I add a custom mapping?
• How do I modify a mapping?