Describe the problem:
Koinly uses the estimated fee of an extrinsic instead of the used fee. Most of the time these are the same but sometimes the estimated fee is a few orders of magnitude higher.
Which exchange/wallet is this regarding?
Confirmed on Kusama (and probably also Polkadot). Koinly may PM me for a specific transaction hash.
How did you import data into this wallet?
API
What have you tried to fix this so far?
Cannot be fixed by the user.