The app clearly reflects the two parts of the Convert & Pay transaction across your currency balances.
Check Source Currency (e.g., EUR): Navigate to the source currency balance. You will see an Outgoing transaction showing the amount of your currency sold (e.g., -26,71 €). The transaction info will specify the currency that was bought.
Check Destination Currency (e.g., GBP): Navigate to the destination currency balance. You will see an Incoming transaction showing the funds that were bought (e.g., +23,00 £), followed immediately by the Outgoing payment to the beneficiary (e.g., -23,00 £).
View Details: Tap any of these transactions to open the Outgoing/Incoming overlay, which shows the reference, remaining balance, and full transaction details, confirming the conversion and payment were successful.