@ebliever:
Let me check on these BT1 and BT2 futures on Bitfinex.
I have not seen them before.
You can also add them and set a custom price.

@TreasureSeeker:
An average gain method calculation is already in progress and will be released soon.

@Robustor:
Really? I can not see any issues.

@jaimeow:
Sorry, but the Coinbase API data is the worst.
That's why it's just a beta import.
They have some strange limits which could be the reason for missing tx.
I would recommend to add these missing tx manually or using the CSV import.

Dario