diff --git a/distribution/changelog.txt b/distribution/changelog.txt
index a5be4c1324..c9ec8063e2 100644
--- a/distribution/changelog.txt
+++ b/distribution/changelog.txt
@@ -24,6 +24,7 @@
 - Fix: [#12881] Guests' favourite rides are not listed in the guest window.
 - Fix: [#12910] Plugin API: getRide sometimes returns null for valid ride IDs.
 - Fix: [#12912] Plugin: selectedCell of CustomListView is being ignored on creation.
+- Fix: [#12918] Cannot place vanilla TD6 tracks of the Hypercoaster, Monster Trucks, Classic Mini Roller Coaster, Spinning Wild Mouse and Hyper-Twister types.
 - Fix: Incomplete loop collision box allowed overlapping track (original bug).
 - Improved: [#12806] Add Esperanto diacritics to the sprite font.
 - Improved: [#12837] Arabic text is now drawn and shaped correctly on Windows.
diff --git a/src/openrct2/rct2/T6Importer.cpp b/src/openrct2/rct2/T6Importer.cpp
index 324d6a28b8..5d6ac357f4 100644
--- a/src/openrct2/rct2/T6Importer.cpp
+++ b/src/openrct2/rct2/T6Importer.cpp
@@ -13,6 +13,8 @@
 #include "../core/MemoryStream.h"
 #include "../core/Path.hpp"
 #include "../core/String.hpp"
+#include "../object/ObjectRepository.h"
+#include "../object/RideObject.h"
 #include "../rct12/SawyerChunkReader.h"
 #include "../rct12/SawyerEncoding.h"
 #include "../ride/Ride.h"
@@ -20,6 +22,10 @@
 #include "../ride/TrackDesign.h"
 #include "../ride/TrackDesignRepository.h"
 
+#include <mutex>
+
+static std::mutex _objectLookupMutex;
+
 /**
  * Class to import RollerCoaster Tycoon 2 track designs (*.TD6).
  */
@@ -200,8 +206,30 @@ public:
         }
 
         td->name = _name;
+
+        UpdateRideType(td);
+
         return td;
     }
+
+    void UpdateRideType(std::unique_ptr<TrackDesign>& td)
+    {
+        if (RCT2RideTypeNeedsConversion(td->type))
+        {
+            std::scoped_lock<std::mutex> lock(_objectLookupMutex);
+            auto* rawObject = object_repository_load_object(&td->vehicle_object);
+            if (rawObject != nullptr)
+            {
+                const auto* rideEntry = static_cast<const rct_ride_entry*>(
+                    static_cast<RideObject*>(rawObject)->GetLegacyData());
+                if (rideEntry != nullptr)
+                {
+                    td->type = RCT2RideTypeToOpenRCT2RideType(td->type, rideEntry);
+                }
+                object_delete(rawObject);
+            }
+        }
+    }
 };
 
 std::unique_ptr<ITrackImporter> TrackImporter::CreateTD6()
diff --git a/src/openrct2/ride/TrackDesignRepository.cpp b/src/openrct2/ride/TrackDesignRepository.cpp
index a3468adfe9..b1ddc12148 100644
--- a/src/openrct2/ride/TrackDesignRepository.cpp
+++ b/src/openrct2/ride/TrackDesignRepository.cpp
@@ -21,14 +21,12 @@
 #include "../core/String.hpp"
 #include "../localisation/LocalisationService.h"
 #include "../object/ObjectRepository.h"
-#include "../object/RideObject.h"
 #include "../ride/RideData.h"
 #include "../util/Util.h"
 #include "TrackDesign.h"
 
 #include <algorithm>
 #include <memory>
-#include <mutex>
 #include <vector>
 
 using namespace OpenRCT2;
@@ -55,8 +53,6 @@ std::string GetNameFromTrackPath(const std::string& path)
     return name;
 }
 
-static std::mutex _objectLookupMutex;
-
 class TrackDesignFileIndex final : public FileIndex<TrackRepositoryItem>
 {
 private:
@@ -82,27 +78,10 @@ public:
         auto td6 = track_design_open(path.c_str());
         if (td6 != nullptr)
         {
-            ObjectEntryIndex rideType = td6->type;
-            if (RCT2RideTypeNeedsConversion(td6->type))
-            {
-                std::scoped_lock<std::mutex> lock(_objectLookupMutex);
-                auto* rawObject = object_repository_load_object(&td6->vehicle_object);
-                if (rawObject != nullptr)
-                {
-                    const auto* rideEntry = static_cast<const rct_ride_entry*>(
-                        static_cast<RideObject*>(rawObject)->GetLegacyData());
-                    if (rideEntry != nullptr)
-                    {
-                        rideType = RCT2RideTypeToOpenRCT2RideType(td6->type, rideEntry);
-                    }
-                    object_delete(rawObject);
-                }
-            }
-
             TrackRepositoryItem item;
             item.Name = GetNameFromTrackPath(path);
             item.Path = path;
-            item.RideType = rideType;
+            item.RideType = td6->type;
             item.ObjectEntry = std::string(td6->vehicle_object.name, 8);
             item.Flags = 0;
             if (IsTrackReadOnly(path))