Do you move /MISC too - means delete from SD card? There are configuration files in with password. Maybe it initialize it always new if this file is missing and something goes wrong with update time in the cam. I do not know hoe C23 works but my CGO3+ gets date/time from ST16 by CGI command via WiFi connection. If somthing is lost via WiFi then the time in the cam will not be updated and starts from scratch.
I would /MISC let it where it is. No need to download it.