Factorio Forums

Posted: **Tue Nov 18, 2025 8:55 pm**

I wrote the migration JSON as shown below.

{
  "tile":[
    ["linox-tile_linox-installation-foundation", "linox-tile_linox-foundation"],
    ["linox-tile_linox-installation-terminal-platform", "linox-tile_linox-terminal-platform"],
    ["linox-tile_linox-installation-hazard-terminal-platform", "linox-tile_linox-hazard-terminal-platform"],
    ["linox-tile_linox-installation-corridor", "linox-tile_linox-corridor"]
  ],
  "space-location":[
    ["linox-surface_linox-installation", "linox-surface_under-1"]
  ],
  "surface":[
    ["linox-surface_linox-installation", "linox-surface_under-1"]
  ]
}

The tile migration works correctly, but it seems that the surface name migration does not work.
Do you know why this happens?

Posted: **Tue Nov 18, 2025 9:07 pm**

Which in-game thing is not being migrated that you expect to be migrated?

Posted: **Tue Nov 18, 2025 9:12 pm**

There is a surface that already exists in save files from previous versions.

I would like to migrate its name to a different one.

Is the surface name not eligible for migration?

Posted: **Tue Nov 18, 2025 9:15 pm**

"surface" json migration is related to instances of SurfacePrototype and its ID's.

There are also surfaces (on which you build entities) that have their own name. That one you can chance through write to LuaSurface::name in the control stage.

Names are quite confusing here but those are 2 unrelated concepts.

Posted: **Tue Nov 18, 2025 9:18 pm**

Thank you. It seems I was confused.

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I would like to migrate (rename) a surface name.

I would like to migrate (rename) a surface name.

Re: I would like to migrate (rename) a surface name.

Re: I would like to migrate (rename) a surface name.

Re: I would like to migrate (rename) a surface name.

Re: I would like to migrate (rename) a surface name.