Merge Poloniex Wallets

Describe the problem:
Poloniex US outputs it’s history in separate CSVs for each transaction type: withdrawals, deposits, trades.

Which exchange/wallet is this regarding?
Poloniex

How did you import data into this wallet?
I used the CSVs which seem like the only thing available to me as a US citizen.

What have you tried to fix this so far?
I’ve successfully imported all 3 CSVs but Koinly is confused that these three apparently separate wallets are all the same wallet. How can I merge these wallets?

The CSVs all have different formats so I don’t think I can just append one after the other.

Solved this. You can import multiple CSVs to the same wallet.

Drag and drop one. Click import. Proceed after it imports. Drag and drop the second. Click import… and so on.