Thanks for posting your concern in the Community. At the moment, reconciling multicurrency transactions is unavailable in QuickBooks.
As a workaround, we'd recommend you record the transactions manually and exclude them from the banking page. This won't impact your accounts since the transactions are already recorded in QuickBooks.
Here's how:
Go to Banking or Transactions on the left panel.
Within the Banking tab, tick all the duplicate transactions.
Click Exclude.
Once done, you can now manually record those transactions using the home currency. Also, there's no need for you to match these bank transactions as your bank account will still have an updated balance.