Hello @julieanne-juille,
The Unrealised Gain or Loss amounts on your report is the indication that you haven't made the revaluation of your foreign currency. This is the reason why your unable to locate any transaction for these amounts on your Transaction List report.
Once you've done the steps of reevaluating your foreign currency, QuickBooks will automatically create a journal entry and adjust the Unrealised Gain or Loss amounts on your report.
In case you need a reference, here's an article you can read to learn more about the Unrealised Gain or Loss amounts of your report. Simply, go to the Revaluation of foreign currency debtors and creditors section in this article: End of Financial Year using QuickBooks Online.
If there's anything else that I can help you with, please let me know in the comment section down below. I'll be always around ready to help.
