I have a daily appender setup to rollover each day.

I am having problem specific to previous day logs. Around 12 in the night, the setup is creating a log file for today, and also updating the rolledover file(for previous day) and thereby clearning the previous day's log.

Example: abc.log (it has log for present day).
abc.log-11-16-04 ( it has log for 1 hour of today).

Ideally abc.log-11-16-04 should have log that is copied from yesterday.

Can any one think of possible problems that might be causing this?