Over the weekend we updated from 220.127.116.115 to the August update 18.104.22.1683. Since then I notice the Result Handling debug logs (eg those in C:\ProgramData\Paessler\PRTG Network Monitor\Logs\sensors) now only store the last result, with none of the older results remaining for comparison.
Is there a reason this has changed, as it makes a LOT harder to troubleshoot issues when you're reliant on catching it and grabbing the log data when a failure event happens, rather than being able to find it later?
In 22.214.171.1245 it definitely behaved differently, as did 126.96.36.1994. Back in May I was using those logs, and found the rotation was such that a sensor testing every minute only had data for about 70 minutes, while one that tested every 5 minutes had just under 6 hours, with the logs clocking in at between 27KB and 45KB. So not a massive amount of log data.
At the time I asked if it was possible to increase the amount of log data stored (https://kb.paessler.com/en/topic/90615-adjusting-result-handling-storage-log-file-rotation-filesize-entries) and was told it wasn't possible, and now it seems PRTG has gone one step further so no historical data is stored at all.