diff --git a/src/openrct2/object/ObjectRepository.cpp b/src/openrct2/object/ObjectRepository.cpp
index 4663730a63..3b1f19f378 100644
--- a/src/openrct2/object/ObjectRepository.cpp
+++ b/src/openrct2/object/ObjectRepository.cpp
@@ -27,6 +27,7 @@
 #include "../localisation/Localisation.h"
 #include "../localisation/LocalisationService.h"
 #include "../object/Object.h"
+#include "../park/Legacy.h"
 #include "../platform/platform.h"
 #include "../rct12/SawyerChunkReader.h"
 #include "../rct12/SawyerChunkWriter.h"
@@ -420,6 +421,12 @@ private:
 
     bool AddItem(const ObjectRepositoryItem& item)
     {
+        const auto newIdent = MapToNewObjectIdentifier(item.Identifier);
+        if (!newIdent.empty())
+        {
+            Console::Error::WriteLine("Mixed install detected. Not loading: '%s'", item.Identifier.c_str());
+            return false;
+        }
         const ObjectRepositoryItem* conflict{};
         if (item.ObjectEntry.name[0] != '\0')
         {
diff --git a/src/openrct2/park/Legacy.cpp b/src/openrct2/park/Legacy.cpp
index 6f072894ad..e38c8e8db5 100644
--- a/src/openrct2/park/Legacy.cpp
+++ b/src/openrct2/park/Legacy.cpp
@@ -30,8 +30,6 @@ static std::map<std::string_view, std::string_view> oldObjectIds = {
     { "openrct2.railings.invisible", "openrct2.footpath_railings.invisible" },
     { "official.zpanda", "rct2dlc.ride.zpanda" },
     { "openrct2.surface.void", "openrct2.terrain_surface.void" },
-    { "openrct2.station.noentrance", "openrct2.station.noentrance" },
-    { "openrct2.station.noplatformnoentrance", "openrct2.station.noplatformnoentrance" },
     { "rct2.sct", "rct2.scenery_large.sct" },
     { "rct2.soh3", "rct2.scenery_large.soh3" },
     { "rct2.scln", "rct2.scenery_large.scln" },
@@ -109,38 +107,7 @@ static std::map<std::string_view, std::string_view> oldObjectIds = {
     { "rct2.scgindus", "rct2.scenery_group.scgindus" },
     { "rct2.scgjungl", "rct2.scenery_group.scgjungl" },
     { "rct2.scgmedie", "rct2.scenery_group.scgmedie" },
-    { "rct2.music.rock1", "rct2.music.rock1" },
-    { "rct2.music.toyland", "rct2.music.toyland" },
-    { "rct2.music.fantasy", "rct2.music.fantasy" },
-    { "rct2.music.custom2", "rct2.music.custom2" },
-    { "rct2.music.candy", "rct2.music.candy" },
-    { "rct2.music.egyptian", "rct2.music.egyptian" },
-    { "rct2.music.pirate", "rct2.music.pirate" },
-    { "rct2.music.ice", "rct2.music.ice" },
-    { "rct2.music.techno", "rct2.music.techno" },
-    { "rct2.music.jurassic", "rct2.music.jurassic" },
-    { "rct2.music.medieval", "rct2.music.medieval" },
-    { "rct2.music.rock2", "rct2.music.rock2" },
-    { "rct2.music.modern", "rct2.music.modern" },
-    { "rct2.music.ragtime", "rct2.music.ragtime" },
-    { "rct2.music.fairground", "rct2.music.fairground" },
-    { "rct2.music.jungle", "rct2.music.jungle" },
-    { "rct2.music.dodgems", "rct2.music.dodgems" },
-    { "rct2.music.gentle", "rct2.music.gentle" },
-    { "rct2.music.summer", "rct2.music.summer" },
-    { "rct2.music.oriental", "rct2.music.oriental" },
-    { "rct2.music.wildwest", "rct2.music.wildwest" },
-    { "rct2.music.space", "rct2.music.space" },
-    { "rct2.music.horror", "rct2.music.horror" },
-    { "rct2.music.custom1", "rct2.music.custom1" },
-    { "rct2.music.snow", "rct2.music.snow" },
-    { "rct2.music.rock3", "rct2.music.rock3" },
-    { "rct2.music.organ", "rct2.music.organ" },
-    { "rct2.music.mechanical", "rct2.music.mechanical" },
     { "rct2.music", "rct2.music.water" },
-    { "rct2.music.urban", "rct2.music.urban" },
-    { "rct2.music.martian", "rct2.music.martian" },
-    { "rct2.music.roman", "rct2.music.roman" },
     { "rct2.bn1", "rct2.footpath_banner.bn1" },
     { "rct2.bn3", "rct2.footpath_banner.bn3" },
     { "rct2.bn7", "rct2.footpath_banner.bn7" },
@@ -822,17 +789,8 @@ static std::map<std::string_view, std::string_view> oldObjectIds = {
     { "rct2.surface.chequerboard", "rct2.terrain_surface.chequerboard" },
     { "rct2.surface.gridpurple", "rct2.terrain_surface.grid_purple" },
     { "rct2.station.castlegrey", "rct2.station.castle_grey" },
-    { "rct2.station.space", "rct2.station.space" },
-    { "rct2.station.plain", "rct2.station.plain" },
-    { "rct2.station.log", "rct2.station.log" },
-    { "rct2.station.jungle", "rct2.station.jungle" },
-    { "rct2.station.snow", "rct2.station.snow" },
     { "rct2.station.castlebrown", "rct2.station.castle_brown" },
-    { "rct2.station.abstract", "rct2.station.abstract" },
-    { "rct2.station.pagoda", "rct2.station.pagoda" },
-    { "rct2.station.classical", "rct2.station.classical" },
     { "rct2.station.canvastent", "rct2.station.canvas_tent" },
-    { "rct2.station.wooden", "rct2.station.wooden" },
     { "rct2.edge.rock", "rct2.terrain_edge.rock" },
     { "rct2.edge.woodred", "rct2.terrain_edge.wood_red" },
     { "rct2.edge.ice", "rct2.terrain_edge.ice" },
@@ -2219,7 +2177,7 @@ std::string_view MapToNewObjectIdentifier(std::string_view s)
     {
         return it->second;
     }
-    return s;
+    return "";
 }
 
 static std::map<std::string_view, std::string_view> DATPathNames = {
diff --git a/src/openrct2/park/ParkFile.cpp b/src/openrct2/park/ParkFile.cpp
index c9c37139b9..06500dbdf1 100644
--- a/src/openrct2/park/ParkFile.cpp
+++ b/src/openrct2/park/ParkFile.cpp
@@ -299,7 +299,16 @@ namespace OpenRCT2
                                     {
                                         ObjectEntryDescriptor desc;
                                         desc.Type = objectType;
-                                        desc.Identifier = MapToNewObjectIdentifier(cs.Read<std::string>());
+                                        auto identifier = cs.Read<std::string>();
+                                        if (version <= 2)
+                                        {
+                                            auto newIdentifier = MapToNewObjectIdentifier(identifier);
+                                            if (!newIdentifier.empty())
+                                            {
+                                                identifier = newIdentifier;
+                                            }
+                                        }
+                                        desc.Identifier = identifier;
                                         desc.Version = cs.Read<std::string>();
 
                                         if (version <= 2)