Kingsmarch Destroying Spectre Corpses

There is a bug in Kingsmarch where when I unequipped my spectres, the corpses were instantly destroyed. I lost a Perfect Forest Warrior and a Perfect Hulking Monstrosity. This is the 2nd time that I have lost my ritual itemized corpses to bugs when they despawn. I am in SSF and it takes me days of farming to get the corpses back. Any assistance would be greatly appreciated.