Persistent invalid overmap special id after updating

[NetSysFire]

Describe the bug

Emits the following after updating from a ~Aug 20 build to one from yesterday. Does not go away after saving. Does not appear happen on a new character in a new world.

 DEBUG    : invalid overmap special id "Railroad Station"

 FUNCTION : const T& generic_factory<T>::obj(const string_id<T>&) const [with T = overmap_special]
 FILE     : src/generic_factory.h
 LINE     : 478
 VERSION  : d48717d

and

 DEBUG    : invalid overmap special id "railroad_city"

 FUNCTION : const T& generic_factory<T>::obj(const string_id<T>&) const [with T = overmap_special]
 FILE     : src/generic_factory.h
 LINE     : 478
 VERSION  : d48717d

Attach save file

Copper Canyon-trimmed.tar.gz

Steps to reproduce

1. Load the save.

Expected behavior

No error.

@ZhilkinSerg added a railroads mod which replaced(?) the no railstations mod in #67713.
Maybe some migration stuff was missed?

Screenshots

No response

Versions and configuration

• OS: Linux
  • OS Version: LSB Version: n/a; Distributor ID: Arch; Description: Arch Linux; Release: rolling; Codename: n/a;
• Game Version: d48717d [64-bit]
• Graphics Version: Tiles
• Game Language: System language []
• Mods loaded: [
  Dark Days Ahead [dda],
  Disable NPC Needs [no_npc_food],
  Slowdown Fungal Growth [no_fungal_growth],
  Bionic Professions [package_bionic_professions]
  ]

Additional context

No response

[ZhilkinSerg]

Add railroad mod to your world mods

[NetSysFire]

Though the no railstations mod has been default for some time, there are still saves without that mod. Due to the annoying persistent error maybe a temporary migration thingy is in order until your mod either becomes integrated into the base game.

[Karol1223]

Though the no railstations mod has been default for some time, there are still saves without that mod. Due to the annoying persistent error maybe a temporary migration thingy is in order until your mod either becomes integrated into the base game.

We claim to try and keep save integrity between stables - having every single save ported from .G have a persistent error every time it loads isn't exactly that. Either we assume the mod gets merged prior to the next stable or we need some migration.

[github-actions]

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