diff --git a/apps/opencs/model/doc/saving.cpp b/apps/opencs/model/doc/saving.cpp
index adcfca576..2b0056e72 100644
--- a/apps/opencs/model/doc/saving.cpp
+++ b/apps/opencs/model/doc/saving.cpp
@@ -16,6 +16,8 @@ CSMDoc::Saving::Saving (Document& document, const boost::filesystem::path& proje
 
     appendStage (new WriteHeaderStage (mDocument, mState, true));
 
+    appendStage (new WriteFilterStage (mDocument, mState, CSMFilter::Filter::Scope_Project));
+
     appendStage (new CloseSaveStage (mState));
 
     // save content file
diff --git a/apps/opencs/model/doc/savingstages.cpp b/apps/opencs/model/doc/savingstages.cpp
index d48e22012..d68c72317 100644
--- a/apps/opencs/model/doc/savingstages.cpp
+++ b/apps/opencs/model/doc/savingstages.cpp
@@ -52,7 +52,6 @@ void CSMDoc::WriteHeaderStage::perform (int stage, std::vector<std::string>& mes
         mState.getWriter().setAuthor ("");
         mState.getWriter().setDescription ("");
         mState.getWriter().setRecordCount (0);
-
     }
     else
     {
@@ -96,6 +95,23 @@ void CSMDoc::WriteRefIdCollectionStage::perform (int stage, std::vector<std::str
 }
 
 
+CSMDoc::WriteFilterStage::WriteFilterStage (Document& document, SavingState& state,
+    CSMFilter::Filter::Scope scope)
+: WriteCollectionStage<CSMWorld::IdCollection<CSMFilter::Filter> > (document.getData().getFilters(),
+  state),
+  mDocument (document), mScope (scope)
+{}
+
+void CSMDoc::WriteFilterStage::perform (int stage, std::vector<std::string>& messages)
+{
+    const CSMWorld::Record<CSMFilter::Filter>& record =
+        mDocument.getData().getFilters().getRecord (stage);
+
+    if (record.get().mScope==mScope)
+        WriteCollectionStage<CSMWorld::IdCollection<CSMFilter::Filter> >::perform (stage, messages);
+}
+
+
 CSMDoc::CloseSaveStage::CloseSaveStage (SavingState& state)
 : mState (state)
 {}
diff --git a/apps/opencs/model/doc/savingstages.hpp b/apps/opencs/model/doc/savingstages.hpp
index 367431fc1..ff94116fd 100644
--- a/apps/opencs/model/doc/savingstages.hpp
+++ b/apps/opencs/model/doc/savingstages.hpp
@@ -6,6 +6,9 @@
 #include "savingstate.hpp"
 
 #include "../world/record.hpp"
+#include "../world/idcollection.hpp"
+
+#include "../filter/filter.hpp"
 
 namespace CSMDoc
 {
@@ -120,6 +123,20 @@ namespace CSMDoc
     };
 
 
+    class WriteFilterStage : public WriteCollectionStage<CSMWorld::IdCollection<CSMFilter::Filter> >
+    {
+            Document& mDocument;
+            CSMFilter::Filter::Scope mScope;
+
+        public:
+
+            WriteFilterStage (Document& document, SavingState& state, CSMFilter::Filter::Scope scope);
+
+            virtual void perform (int stage, std::vector<std::string>& messages);
+            ///< Messages resulting from this stage will be appended to \a messages.
+    };
+
+
     class CloseSaveStage : public Stage
     {
             SavingState& mState;
diff --git a/components/esm/defs.hpp b/components/esm/defs.hpp
index bd86f9ba0..dd7ebfe93 100644
--- a/components/esm/defs.hpp
+++ b/components/esm/defs.hpp
@@ -36,6 +36,7 @@ struct Position
 
 enum RecNameInts
 {
+    // format 0 / legacy
     REC_ACTI = 0x49544341,
     REC_ALCH = 0x48434c41,
     REC_APPA = 0x41505041,
@@ -80,7 +81,10 @@ enum RecNameInts
     REC_SPEL = 0x4c455053,
     REC_SSCR = 0x52435353,
     REC_STAT = 0x54415453,
-    REC_WEAP = 0x50414557
+    REC_WEAP = 0x50414557,
+
+    // format 1
+    REC_FILT = 0x544C4946
 };
 
 }
diff --git a/components/esm/filter.cpp b/components/esm/filter.cpp
index 96cc19d43..a80427bbe 100644
--- a/components/esm/filter.cpp
+++ b/components/esm/filter.cpp
@@ -3,6 +3,9 @@
 
 #include "esmreader.hpp"
 #include "esmwriter.hpp"
+#include "defs.hpp"
+
+unsigned int ESM::Filter::sRecordId = REC_FILT;
 
 void ESM::Filter::load (ESMReader& esm)
 {
diff --git a/components/esm/filter.hpp b/components/esm/filter.hpp
index a44d1b198..bc3dd7bdc 100644
--- a/components/esm/filter.hpp
+++ b/components/esm/filter.hpp
@@ -10,6 +10,8 @@ namespace ESM
 
     struct Filter
     {
+        static unsigned int sRecordId;
+
         std::string mId;
 
         std::string mDescription;