diff --git a/Sources/Plasma/PubUtilLib/plResMgr/plRegistryKeyList.cpp b/Sources/Plasma/PubUtilLib/plResMgr/plRegistryKeyList.cpp
index 8cbdd700c7..ed4cb9b85f 100644
--- a/Sources/Plasma/PubUtilLib/plResMgr/plRegistryKeyList.cpp
+++ b/Sources/Plasma/PubUtilLib/plResMgr/plRegistryKeyList.cpp
@@ -201,6 +201,16 @@ bool plRegistryKeyList::SetKeyUnused(plKeyImp* key, LoadStatus& loadStatusChange
     return foundKey != nullptr;
 }
 
+void plRegistryKeyList::PrepForWrite()
+{
+    uint32_t objectID = 1;
+    for (plKeyImp* key : fKeys) {
+        if (key->ObjectIsLoaded()) {
+            key->SetObjectID(objectID++);
+        }
+    }
+}
+
 void plRegistryKeyList::Read(hsStream* s)
 {
     uint32_t keyListLen = s->ReadLE32();
diff --git a/Sources/Plasma/PubUtilLib/plResMgr/plRegistryKeyList.h b/Sources/Plasma/PubUtilLib/plResMgr/plRegistryKeyList.h
index 6e71efa7ab..21fac7a019 100644
--- a/Sources/Plasma/PubUtilLib/plResMgr/plRegistryKeyList.h
+++ b/Sources/Plasma/PubUtilLib/plResMgr/plRegistryKeyList.h
@@ -97,6 +97,10 @@ class plRegistryKeyList
     void SetKeyUsed(plKeyImp* key) { ++fReffedKeys; }
     bool SetKeyUnused(plKeyImp* key, LoadStatus& loadStatusChange);
 
+    // Export time only.  Before we write to disk, assign all the loaded keys
+    // sequential object IDs that they can use to do fast lookups at load time.
+    void PrepForWrite();
+
     void Read(hsStream* s);
     void Write(hsStream* s);
 };
diff --git a/Sources/Plasma/PubUtilLib/plResMgr/plRegistryNode.cpp b/Sources/Plasma/PubUtilLib/plResMgr/plRegistryNode.cpp
index 2624fbf3be..8109076a28 100644
--- a/Sources/Plasma/PubUtilLib/plResMgr/plRegistryNode.cpp
+++ b/Sources/Plasma/PubUtilLib/plResMgr/plRegistryNode.cpp
@@ -230,6 +230,9 @@ void plRegistryPageNode::Write()
     for (it = fKeyLists.begin(); it != fKeyLists.end(); it++)
     {
         plRegistryKeyList* keyList = it->second;
+        if (fIsNewPage)
+            keyList->PrepForWrite();
+
         int ver = plVersion::GetCreatableVersion(keyList->GetClassType());
         fPageInfo.AddClassVersion(keyList->GetClassType(), ver);
     }