How can I use my deposits and withdrawals csv from kucoin for my 1099B?

So I have access to my trading history csv from kucoin. However, before I started trading, I received some crypto from another account. TurboTax's software wants me to enter every source, which I am unable to do since I do not have access to the wallet from which I received crypto. However, I do have access to a deposits/withdrawals csv file (in addition to the trading history file), which can account for the fact that according to my trading history, I sold more of some crypto than I should have had. Can someone please guide me on solving this problem as I cannot access the previous account/wallet, but can provide my trading history and deposits/withdrawals information from my current wallet itself