When you are using multiple input sessions to create a playback session to a file, no time gaps are allowed in input sessions. That is, when target is file, no gaps can exist between an input session’s end time and the next input session’s start time.
For example, if you collected data from 9 a.m. to 5 p.m. every day from Monday through Friday, you could not play back those five recording sessions to create a new, summarized, weekly session. However, if you eliminate the time gaps by collecting data from 9 a.m. to 9 a.m. every day from Monday through Friday, you could use the playback feature to create a new, summarized weekly session. Another way to eliminate the time gaps is to keep the 9 a.m. to 5 p.m. recording session, but add another set of recording sessions scheduled from 5 p.m. to 9 a.m. Use a longer sample interval for the off hours to reduce the volume of data collected.