Duramax stock AC Delco engine Diesel fuel filter internals cut open dissection on LMM

Duramax stock AC Delco engine Diesel fuel filter internals cut open dissection on LMM. I forgot to mention it was done after 12,000 mi use interval I've gotten as much as 18 typically but this one dropped from 40% down to zero it had chunks in it I can't see why but it was Carlos in a fuel rail pressure cold I don't get where I'm sorry I think it was and so I went ahead and changed it even though it's at 12:00,000 miles because it dropped from 40% life to zero I had previously cut a few line by mistake so I replaced the fuel line but some shards of that line are probably the debris that's in the filter previous to this in the rear I have a fast double filter plus pump titanium series setup so the stuff that's in this filter is because I cut the fuel line up by the engine