How to find out what "Find and group transfers" did?

I imported various banks’ transactions, including both sides of a credits/payment of credit card balances that should be a transfer. In the past I’ve located the two transactions, then chosen Edit > Group transactions, but I tried Tools > Find and group transfers. This said “Document successfully processed. 4 transfers created.”, which is great… but how can I find those transactions that turned into transfers?

(I feel I asked this before, my apologies if so.)