Interest are collected on the Hive blockchain when the savings balance change.
The way Peakd operates is not accidental, but intentional.

Here a the transactions generated on your account:

1. Initiate a transfer_from_savings operation to generate a change in the savings balance and triggers the interest collection
2. Interests are collected and added to your savings by the blockchain
3. The initiated transfer is cancelled.

Therefore, you didn't lose anything or miss anything.