reported Submarines have missing collision model for weapons?

[Killshot0597]

Someone informed me that they fired RB-15s onto a sub and the missile went right through and do no damage, I made a quick test to try and recreate it but I used a hornet with harpoons instead. Similar result. The harpoon goes right through as seen in these screenshots. I'll provide my .miz file i used for the test and a track file as well.
I did another test but using a AGM-65F as well and similar result but the MAV still goes right through and explodes as it hits the water where the sub is and does splash damage instead. If memory serves me right a single AGM-65F should sink a submarine (Improved Kilo class) in 1 hit.

Sub Harpoon Test.miz Submarine Harpoon.trk

[NineLine]

Reported, thanks!