diff --git a/distribution/changelog.txt b/distribution/changelog.txt
index d0b2c660a2..c5a5d016a0 100644
--- a/distribution/changelog.txt
+++ b/distribution/changelog.txt
@@ -6,6 +6,7 @@
 - Improved: [#25349] ‘Recent Messages’ window can now be fully themed.
 - Change: [#25089] Peep actions and animations that cause them to stop moving no longer trigger when they are on a level crossing.
 - Change: [#25337] Placing track designs with scenery that is obstructed no longer disables all of the scenery.
+- Fix: [#20198] Guest inventory from RCT1 base game saves is not imported.
 - Fix: [#20486] Multiplayer desync when placing track designs without any scenery.
 - Fix: [#22779, #25330] Incorrect queue paths in Nevermore Park and Six Flags Holland scenarios (bug in the original scenarios).
 - Fix: [#24975] The Corkscrew and LIM Launched (original bug) roller coaster quarter loop tunnels are too high.
diff --git a/src/openrct2/rct1/RCT1.h b/src/openrct2/rct1/RCT1.h
index d1784aeb84..78aba54644 100644
--- a/src/openrct2/rct1/RCT1.h
+++ b/src/openrct2/rct1/RCT1.h
@@ -659,7 +659,9 @@ namespace OpenRCT2::RCT1
             uint8_t PeepIsLostCountdown; // 0xC6
         };
         RCT12RideId Photo1RideRef;     // 0xC7
-        uint32_t PeepFlags;            // 0xC8
+        uint8_t PeepFlags;             // 0xC8
+        uint8_t padC9;                 // 0xC9
+        uint16_t itemFlagsBase;        // 0xCA
         RCT12xyzd8 PathfindGoal;       // 0xCC
         RCT12xyzd8 PathfindHistory[4]; // 0xD0
         uint8_t NoActionFrameNum;      // 0xE0
@@ -692,10 +694,10 @@ namespace OpenRCT2::RCT1
         RCT12RideId FavouriteRide;   // 0xF9
         uint8_t FavouriteRideRating; // 0xFA
         uint8_t PadFB;
-        uint32_t ItemStandardFlags; // 0xFC
-        uint64_t GetItemFlags() const
+        uint32_t itemFlagsAALL; // 0xFC
+        uint64_t GetItemFlags(bool isBase) const
         {
-            return ItemStandardFlags;
+            return isBase ? itemFlagsBase : itemFlagsAALL;
         }
     };
     static_assert(sizeof(Peep) == 0x100);
diff --git a/src/openrct2/rct1/S4Importer.cpp b/src/openrct2/rct1/S4Importer.cpp
index e3aad3ce36..c4e0209f38 100644
--- a/src/openrct2/rct1/S4Importer.cpp
+++ b/src/openrct2/rct1/S4Importer.cpp
@@ -2933,18 +2933,20 @@ namespace OpenRCT2::RCT1
         dst->OutsideOfPark = static_cast<bool>(src->OutsideOfPark);
         dst->TimeToConsume = src->TimeToConsume;
         dst->VandalismSeen = src->VandalismSeen;
-        dst->UmbrellaColour = RCT1::GetColour(src->UmbrellaColour);
-        dst->HatColour = RCT1::GetColour(src->HatColour);
 
-        // Balloons were always blue in RCT1 without AA/LL
+        // Balloons were always blue in RCT1 without AA/LL, umbrellas always red
         if (_gameVersion == FILE_VERSION_RCT1)
         {
+            dst->UmbrellaColour = COLOUR_BRIGHT_RED;
             dst->BalloonColour = COLOUR_LIGHT_BLUE;
         }
         else
         {
+            dst->UmbrellaColour = RCT1::GetColour(src->UmbrellaColour);
             dst->BalloonColour = RCT1::GetColour(src->BalloonColour);
         }
+        dst->HatColour = RCT1::GetColour(src->HatColour);
+
         dst->Happiness = src->Happiness;
         dst->HappinessTarget = src->HappinessTarget;
         dst->Nausea = src->Nausea;
@@ -3012,7 +3014,7 @@ namespace OpenRCT2::RCT1
             dst->FavouriteRideRating = 0;
         }
 
-        dst->SetItemFlags(src->GetItemFlags());
+        dst->SetItemFlags(src->GetItemFlags(_gameVersion == FILE_VERSION_RCT1));
     }
 
     template<>