They want you to upload current policy, current car, insurance company and agent if applicable. Day of delivery is the switch to Tesla which they walk you through or you do on your own with your insurance agent like any other new car. But the previous poster is right. Part of the ordering specs is completing current insurance and upload proof. Why it matters I don’t know. My SA advised me to do same. Under insurance, once uploaded, you get a big
for completing next to “insurance“ as a step in the ordering and buying process under your account.