Serial Number resetting randomly S’abonner

Hi,

I have serial number on a label where I have not chosen any kind of reset, yet, it seems to reset itself randomly during the day.  As an example, I printed yesterday and SN 60000 came out (the starting SN) and I printed two jobs in a row, and it incremented properly.  After a few hours I tried again, and it started back @ 60000.  Is there any way besides on the label that a SN can be reset?  I only seem to be having this issue on one label, and we have many that use serialization. 

Thanks