diff --git a/CSharp/Plugins/UniversalEditor.Plugins.Microsoft/DataFormats/Package/OpenPackagingConvention/OPCDataFormat.cs b/CSharp/Plugins/UniversalEditor.Plugins.Microsoft/DataFormats/Package/OpenPackagingConvention/OPCDataFormat.cs
index b0f5fbbd..d089af35 100644
--- a/CSharp/Plugins/UniversalEditor.Plugins.Microsoft/DataFormats/Package/OpenPackagingConvention/OPCDataFormat.cs
+++ b/CSharp/Plugins/UniversalEditor.Plugins.Microsoft/DataFormats/Package/OpenPackagingConvention/OPCDataFormat.cs
@@ -91,6 +91,13 @@ namespace UniversalEditor.DataFormats.Package.OpenPackagingConvention
 				File _rels = new File();
 				_rels.Name = ".rels";
 
+				RelationshipsObjectModel rels = new RelationshipsObjectModel ();
+				foreach (Relationship rel in package.Relationships)
+				{
+					rels.Relationships.Add (rel);
+				}
+				_rels.SetObjectModel<RelationshipsObjectModel> (new OPCRelationshipsDataFormat (), rels);
+
 				fldr.Files.Add(_rels);
 
 				fsom.Folders.Add(fldr);
diff --git a/CSharp/Plugins/UniversalEditor.Plugins.Microsoft/DataFormats/Package/Relationships/OPCRelationshipsDataFormat.cs b/CSharp/Plugins/UniversalEditor.Plugins.Microsoft/DataFormats/Package/Relationships/OPCRelationshipsDataFormat.cs
index 34a9be38..5294d92f 100644
--- a/CSharp/Plugins/UniversalEditor.Plugins.Microsoft/DataFormats/Package/Relationships/OPCRelationshipsDataFormat.cs
+++ b/CSharp/Plugins/UniversalEditor.Plugins.Microsoft/DataFormats/Package/Relationships/OPCRelationshipsDataFormat.cs
@@ -44,5 +44,30 @@ namespace UniversalEditor.DataFormats.Package.Relationships
 				rels.Relationships.Add(rel);
 			}
 		}
+
+		protected override void BeforeSaveInternal (Stack<ObjectModel> objectModels)
+		{
+			base.BeforeSaveInternal (objectModels);
+
+			RelationshipsObjectModel rels = (objectModels.Pop () as RelationshipsObjectModel);
+			MarkupObjectModel mom = new MarkupObjectModel ();
+
+			MarkupTagElement tagRelationships = new MarkupTagElement ();
+			tagRelationships.Attributes.Add ("xmlns", "http://schemas.openxmlformats.org/package/2006/relationships");
+			tagRelationships.FullName = "Relationships";
+			foreach (Relationship rel in rels.Relationships)
+			{
+				MarkupTagElement tagRelationship = new MarkupTagElement ();
+				tagRelationship.FullName = "Relationship";
+				tagRelationship.Attributes.Add ("Target", rel.Target);
+				tagRelationship.Attributes.Add ("Id", rel.ID);
+				tagRelationship.Attributes.Add ("Type", rel.Schema);
+				tagRelationships.Elements.Add (tagRelationship);
+			}
+
+			mom.Elements.Add (tagRelationships);
+
+			objectModels.Push (mom);
+		}
 	}
 }