I have a BI6 running with 22 cameras. For the last few months I have noticed that a few cameras have alerts that show up since this latest system was installed but on several cameras I only have alerts that show up for 3-4 days. The clips are still there but there are not alerts prior to 3-4 days. The global storage options for alerts are storage based and I have plenty of free space. 2 cameras show alerts for months consistently but the rest only a few days. I have deleted the DB and rebuilt multiple times with the same results. Is there a per camera alert retention setting I am missing somewhere?