Actually, when a new application is deployed, a log file is generated on client computer under C:\Windows\CCM\logs\PatchMyPCInstallLogs when logging is enable... But if I had log file of previous installation (few days ago) these logs are deleted during this new instalation.
Could be possible to add a new option that allow to manage log retention based on days (like: keep x days) or size (like: keep newer files until x MB)