How to fix garbled rail blueprints after updating to 2.0

[Hornwitser]

If you updated the game from 1.1 to one of the 2.0 versions before 2.0.9 then the rail blueprints in your blueprint library may have been garbled.

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To fix this you can revert your blueprint library to the 1.1 version by following these steps.

1. Make sure you're on version 2.0.9 or later, otherwise these steps will not work.
    
2. Before you continue, reverting the library will cause all the blueprints you've added or modified in your blueprint library in 2.0 to be lost. To keep these you can copy them to the blueprint library inside one of your saves. Load up your favourite save and copy the blueprints you want to keep from "My blueprints" to "Game blueprints". Remember to save the game after doing this!
   

   

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3. If you're using the Steam version of the game, then from the main menu go to "Settings" and then to "Other" and disable "blueprint library Cloud Sync".
   

   

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4. Exit the game, and go to the application directory where game stores the config and log files. If you're on Windows this will typically be in "%AppData%\Factorio" you should be able to open this by pressing start and typing that in without quotes. If you downloaded the zip version of the game it'll be in the directory you extracted the game to. For other platforms see https://wiki.factorio.com/Application_directory
    
5. Rename blueprint-storage-2.dat to blueprint-storage-2-garbled.dat (if the file shows up without a .dat suffix for you then leave it out when renaming). This will cause the game to not find the blueprint library for 2.0 and load and migrate the blueprint library from 1.1 again.
   

   

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6. Launch the game again and the blueprints from 1.1 should be fixed!
   

   

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7. If you turned off "blueprint library Cloud Sync" in step 3 you can turn it back on again now.
    
8. If you had blueprints you put into a save-game in step 2, load that save-game again and move the blueprints back from "Game blueprints" to "My blueprints".

[Jap2.0]

This seems like it might be a bug.

Is this just a way of building rails with the 1.1 curve radius in 2.0? If so, that's both probably not intended and also will probably lead to things breaking in a future release.

you won't be able to construct the old rails at all anymore.
In some future Factorio update when we decide to drop 1.1 savegame compatibility (Let's say 2.1), we will eventually get rid of the old rail shapes completely.

If it's a way of getting the base game to actually migrate blueprints (which seems less likely to me, but I don't have rail blueprints sitting around so I can't quickly test) then it should be happening when you update regardless.

[Hornwitser]

This seems like it might be a bug.

See viewtopic.php?f=11&t=116106

The game lets you import blueprint strings with the old rails and build them. They specifically fixed a bug which caused rail blueprints in the blueprint library to be garbled, so this is (for now at least) intended behaviour.

[Jap2.0]

This seems like it might be a bug.

See viewtopic.php?f=11&t=116106

The game lets you import blueprint strings with the old rails and build them. They specifically fixed a bug which caused rail blueprints in the blueprint library to be garbled, so this is (for now at least) intended behaviour.

Ah, thanks for the link.

So it was the second of the options.