I sold some of my crypto directly to my bank account (receiving fiat). Kraken does not report such trades on my 1099-DA, but Koinly still marks them with box K.
These payments should have box L checked
Workaround
  1. Create a new wallet in Koinly called "Bank Gateway" (or anything)
  2. Edit the trade crypto -> fiat and the later withdrawal of fiat. Change the wallet to "Bank Gateway" for both
  3. Create a manual transfer of crypto from Kraken to "Bank Gateway" 1min before the trade
  4. On the Tax Reports page, mark this wallet as 1099-DA "Not received"