we want to know from which file (source code) the opportunity base rate is auto-updated when the corresponding currency rate is changed from the system setting.
1. opened opp with usd currency rate.
2. modified the usd currency rate from the system setting. the record from 1 is auto-refreshed and shows the updated rate made.
we modified these files for testing purposes but still the opp base rate is updated when the record is autorefresh.