Transfer DST content for DS

[Hungry French]

DS has not been updated for a long time. She hasn't received content for years. 
(There are not even HD textures in the game)

DST does not respect solo players and and it does not give the same interesting experience as DS.

Here I want to add at least cave hole in DS ruins or at least something to empty caves without content ( maybe Nightmare Werepig . )

Let's say I found the necessary files so that cave hole would function in DS.
But due to some unknown errors when trying to spawn cave hole, the game loses the interface.

Or Tail o' Three Cats instead of lose agro, the game literally freezes.
I simply don't know what these errors are related to and I don't understand at all where I can find information to fix it