Trader/Merchant/Non-Lethal Loot

[Stray]

So after playing through a bit and near the end of Act 2 I noticed different behaviors for certain Traders/Merchants.

Most of their loot disappears when they are killed

If you knock them unconscious with non-lethal some will show you more/most of their loot.
Some will even drop their Gold while others won't so it's not as good as pickpocketing but still get a good chunk.
(For me the Trader in Emerald Grove dropped all his Gold and the stuff I sold to him)
(But the Trader in Mountain Pass did not drop her Gold but most of her gear)

Some will not drop much or anything when killed or knocked out
(The Trader at the Inn in Risen Road).

If they die while knocked unconscious their loot will disappear from their inventory while you are accessing it.

https://www.youtube.com/watch?v=n2O2enbDK5A

I was actually able to get Video of it from an accident.

If you knock a character out and still their loot they will be back after a long rest and their inventory will be refreshed at least from my experience

Has anyone else noticed inconsistent or strange behavior of loot on characters? I tried Non-lethal on some normal characters but seems for normal characters loot is always the same at least from my experience