This ended up having 2 separate "resolutions" The message cleared on Threat Emulation Logs when we updated to Threat Engine Update 8.7 last year in August. The Message seen on HTTP Traffic was stated that it has no environmental impact and is unable to be cleared. The limitation of updates to the log is 500 updates by design. The error "Log Unification Error: Too Many Updates logs, log has been truncated" indicates the deviation in the number of updates, over 500. You can private message me if you would like the cases for reference.