diff --git a/DataSpec/DNACommon/DNACommon.hpp b/DataSpec/DNACommon/DNACommon.hpp
index 2cda9db94..84ea6d2cd 100644
--- a/DataSpec/DNACommon/DNACommon.hpp
+++ b/DataSpec/DNACommon/DNACommon.hpp
@@ -155,6 +155,7 @@ public:
 
     bool operator!=(const UniqueID32& other) const {return m_id != other.m_id;}
     bool operator==(const UniqueID32& other) const {return m_id == other.m_id;}
+    bool operator<(const UniqueID32& other) const {return m_id < other.m_id;}
     uint32_t toUint32() const {return m_id;}
     uint64_t toUint64() const {return m_id;}
     std::string toString() const;
@@ -219,6 +220,7 @@ public:
 
     bool operator!=(const UniqueID64& other) const {return m_id != other.m_id;}
     bool operator==(const UniqueID64& other) const {return m_id == other.m_id;}
+    bool operator<(const UniqueID64& other) const {return m_id < other.m_id;}
     uint64_t toUint64() const {return m_id;}
     std::string toString() const;
     void clear() {m_id = 0xffffffffffffffff;}
diff --git a/DataSpec/DNACommon/PAK.cpp b/DataSpec/DNACommon/PAK.cpp
index 841c9ca1b..b832f3ec2 100644
--- a/DataSpec/DNACommon/PAK.cpp
+++ b/DataSpec/DNACommon/PAK.cpp
@@ -283,10 +283,7 @@ hecl::ProjectPath PAKRouter<BRIDGETYPE>::getWorking(const EntryType* entry,
 
     const PAKType* pak = m_pak.get();
     intptr_t curBridgeIdx = reinterpret_cast<intptr_t>(m_curBridgeIdx.get());
-    if (!pak)
-        LogDNACommon.report(logvisor::Fatal,
-        "PAKRouter::enterPAKBridge() must be called before PAKRouter::getWorkingPath()");
-    if (pak->m_noShare)
+    if (pak && pak->m_noShare)
     {
         const EntryType* singleSearch = pak->lookupEntry(entry->id);
         if (singleSearch)
@@ -400,10 +397,7 @@ hecl::ProjectPath PAKRouter<BRIDGETYPE>::getCooked(const EntryType* entry) const
 
     const PAKType* pak = m_pak.get();
     intptr_t curBridgeIdx = reinterpret_cast<intptr_t>(m_curBridgeIdx.get());
-    if (!pak)
-        LogDNACommon.report(logvisor::Fatal,
-        "PAKRouter::enterPAKBridge() must be called before PAKRouter::getCookedPath()");
-    if (pak->m_noShare)
+    if (pak && pak->m_noShare)
     {
         const EntryType* singleSearch = pak->lookupEntry(entry->id);
         if (singleSearch)
@@ -761,6 +755,17 @@ hecl::ProjectPath PAKRouter<BRIDGETYPE>::getAreaLayerCooked(const IDType& areaId
     return hecl::ProjectPath();
 }
 
+template <class BRIDGETYPE>
+void PAKRouter<BRIDGETYPE>::enumerateResources(const std::function<bool(const EntryType*)>& func)
+{
+    if (!m_bridges)
+        LogDNACommon.report(logvisor::Fatal,
+        "PAKRouter::build() must be called before PAKRouter::enumerateResources()");
+    for (const auto& entryPair : m_uniqueEntries)
+        if (!func(entryPair.second.second))
+            return;
+}
+
 template class PAKRouter<DNAMP1::PAKBridge>;
 template class PAKRouter<DNAMP2::PAKBridge>;
 template class PAKRouter<DNAMP3::PAKBridge>;
diff --git a/DataSpec/DNACommon/PAK.hpp b/DataSpec/DNACommon/PAK.hpp
index 18db4abaa..ce1655ab2 100644
--- a/DataSpec/DNACommon/PAK.hpp
+++ b/DataSpec/DNACommon/PAK.hpp
@@ -230,6 +230,8 @@ public:
     hecl::ProjectPath getAreaLayerWorking(const IDType& areaId, int layerIdx, bool& activeOut) const;
     hecl::ProjectPath getAreaLayerCooked(const IDType& areaId, int layerIdx) const;
     hecl::ProjectPath getAreaLayerCooked(const IDType& areaId, int layerIdx, bool& activeOut) const;
+
+    void enumerateResources(const std::function<bool(const EntryType*)>& func);
 };
 
 }
diff --git a/DataSpec/SpecMP1.cpp b/DataSpec/SpecMP1.cpp
index b7ca1108e..80d70549f 100644
--- a/DataSpec/SpecMP1.cpp
+++ b/DataSpec/SpecMP1.cpp
@@ -262,6 +262,31 @@ struct SpecMP1 : SpecBase
         outPath.makeDir();
         hecl::ProjectPath mp1OutPath(outPath, _S("MP1"));
         mp1OutPath.makeDir();
+
+        /* Generate original ID mapping for MLVL and SCAN entries */
+        {
+            std::vector<UniqueID32> originalIDs;
+            m_pakRouter.enumerateResources([&](const DNAMP1::PAK::Entry* ent) -> bool
+            {
+                if (ent->type == FOURCC('MLVL') || ent->type == FOURCC('SCAN'))
+                    originalIDs.push_back(ent->id);
+                return true;
+            });
+            std::sort(originalIDs.begin(), originalIDs.end());
+
+            athena::io::YAMLDocWriter yamlW("MP1OriginalIDs");
+            for (const UniqueID32& id : originalIDs)
+            {
+                hecl::ProjectPath path = m_pakRouter.getWorking(id);
+                yamlW.writeString(id.toString().c_str(), path.getRelativePathUTF8());
+            }
+            hecl::ProjectPath path(m_project.getProjectWorkingPath(), "MP1/original_ids.yaml");
+            path.makeDirChain(false);
+            athena::io::FileWriter fileW(path.getAbsolutePath());
+            yamlW.finish(&fileW);
+        }
+
+        /* Extract non-pak files */
         progress(_S("MP1 Root"), _S(""), 3, 0.0);
         int prog = 0;
         ctx.progressCB = [&](const std::string& name) {
@@ -275,6 +300,7 @@ struct SpecMP1 : SpecBase
         }
         progress(_S("MP1 Root"), _S(""), 3, 1.0);
 
+        /* Extract unique resources */
         std::mutex msgLock;
         hecl::ClientProcess process;
         int compIdx = 4;