Why is Cloud Integration Gateway (CIG) Transaction Tracker not showing my old payloads?

CIG retains the transactional data for 30 days in the test and production environments. Even if you search for records older than 30 days, no results will come up for a date > (current date - 30).

For further reference, please refer to section Working with the Transaction Tracker in CIG configuration guide.

SAP Integration Suite Managed Gateway > Managed Gateway for Business Network SCC > Managed Gateway for Buyer Business Network SCC