How Does Skyrim Saves Remember Item Ids?

[kissofthehell]

When you change load order of a mod the x item in that mod its first 2 numbers of its ID change from load order. How does the skyrim save know the ID after load order change? Does it "lookup" the id and then search for similiar ids in the load order?

 

Long story short: how skyrim saves remember the item id after you change the load order so the item wont dissapear when reloading the save after load order change.

[Anderill]

Hm, I didn't think that item numbers changed, ever, even mods have their own ID in game I thought.

[Tefnacht]

Each save file contains a list of all used plugin file names. The record ID's in the save refer to this list, not the actual load order.

 

Imagine a record with the ID 09-123456 in the save. The game goes through the list in the save and looks what plugin file 09 refers to. Lets say it is somemod.esp. Now the game checks what load order position somemod.esp actually has. Lets say it is 11. Then the game modifies the record ID to be 11-123456 for the running game.

 

This is also the reason why renaming a plugin file is such a bad idea. If somemod.esp is renamed to anothermod.esp, the game would not know what to do with 09-123456 anymore and complain that a mod is missing.

[kissofthehell]

Each save file contains a list of all used plugin file names. The record ID's in the save refer to this list, not the actual load order.

 

Imagine a record with the ID 09-123456 in the save. The game goes through the list in the save and looks what plugin file 09 refers to. Lets say it is somemod.esp. Now the game checks what load order position somemod.esp actually has. Lets say it is 11. Then the game modifies the record ID to be 11-123456 for the running game.

 

This is also the reason why renaming a plugin file is such a bad idea. If somemod.esp is renamed to anothermod.esp, the game would not know what to do with 09-123456 anymore and complain that a mod is missing.

I see. Thank you. I tought it was more complicated for the save but its actually pretty simple.