I am not sure about the log files as I have little knowledge about Qlikview server please help me in understanding as I got the task to search for an ID used last I searched on the session log I found it under session file for 14/7/2015 but when I am checking the same session log file it did not have the ID not sure what is happening??
I would say normally previous data won't be changed. There are already applications for various meta- and logging-data available. I think this will be useful for you:
