Your building auto loads at 3 hours? That's quite a long wait don't you think?Every 3 hours anything that has been cbi'd is auto loaded onto the trailer. That's why sometimes you may notice in DPM more PIPO or noncon has been sorted than the lanes team has gotten credit for. Or you have more PIPO in your lanes than what's listed on DPM or IRP.
SNL force loads it onto the trailer and bypasses the whole autoload process. But the sorter doesn't usually get prod credit for it. So its usually used when a closer has to SUL freight off a trailer they can't fit stuff on they're suppose to use SNL so they don't double dip on prod.