diff --git a/lib/readResources.js b/lib/readResources.js
index 52022cf0..c19c692a 100644
--- a/lib/readResources.js
+++ b/lib/readResources.js
@@ -64,27 +64,27 @@ function readResources(gltf, options) {
 }
 
 function readBuffer(gltf, buffer, options) {
-    return readResource(gltf, buffer, options)
+    return readResource(gltf, buffer, false, options)
         .then(function(data) {
             buffer.extras._pipeline.source = data;
         });
 }
 
 function readImage(gltf, image, options) {
-    return readResource(gltf, image, options)
+    return readResource(gltf, image, true, options)
         .then(function(data) {
             image.extras._pipeline.source = data;
         });
 }
 
 function readShader(gltf, shader, options) {
-    return readResource(gltf, shader, options)
+    return readResource(gltf, shader, true, options)
         .then(function(data) {
             shader.extras._pipeline.source = data.toString();
         });
 }
 
-function readResource(gltf, object, options) {
+function readResource(gltf, object, saveResourceId, options) {
     const uri = object.uri;
     delete object.uri; // Don't hold onto the uri, its contents will be stored in extras._pipeline.source
 
@@ -98,19 +98,22 @@ function readResource(gltf, object, options) {
     if (defined(extensions)) {
         const khrBinaryGltf = extensions.KHR_binary_glTF;
         if (defined(khrBinaryGltf)) {
-            return Promise.resolve(readBufferView(gltf, khrBinaryGltf.bufferView));
+            return Promise.resolve(readBufferView(gltf, khrBinaryGltf.bufferView, object, saveResourceId));
         }
     }
     if (defined(object.bufferView)) {
-        return Promise.resolve(readBufferView(gltf, object.bufferView));
+        return Promise.resolve(readBufferView(gltf, object.bufferView, object, saveResourceId));
     }
     if (isDataUri(uri)) {
         return Promise.resolve(dataUriToBuffer(uri));
     }
-    return readFile(object, uri, options);
+    return readFile(object, uri, saveResourceId, options);
 }
 
-function readBufferView(gltf, bufferViewId) {
+function readBufferView(gltf, bufferViewId, object, saveResourceId) {
+    if (saveResourceId) {
+        object.extras._pipeline.resourceId = bufferViewId;
+    }
     const bufferView = gltf.bufferViews[bufferViewId];
     const buffer = gltf.buffers[bufferView.buffer];
     const source = buffer.extras._pipeline.source;
@@ -118,7 +121,7 @@ function readBufferView(gltf, bufferViewId) {
     return source.slice(byteOffset, byteOffset + bufferView.byteLength);
 }
 
-function readFile(object, uri, options) {
+function readFile(object, uri, saveResourceId, options) {
     const resourceDirectory = options.resourceDirectory;
     const hasResourceDirectory = defined(resourceDirectory);
 
@@ -140,6 +143,10 @@ function readFile(object, uri, options) {
         object.name = path.basename(relativePath, extension);
     }
 
+    if (saveResourceId) {
+        object.extras._pipeline.resourceId = absolutePath;
+    }
+
     object.extras._pipeline.absolutePath = absolutePath;
     object.extras._pipeline.relativePath = relativePath;
     return fsExtra.readFile(absolutePath);
diff --git a/lib/writeResources.js b/lib/writeResources.js
index e492b001..d734e254 100644
--- a/lib/writeResources.js
+++ b/lib/writeResources.js
@@ -119,9 +119,9 @@ function writeBufferView(gltf, object, writtenResourceMap) {
     delete object.uri;
 
     // If we've written this resource before, re-use the bufferView
-    const originalPathOrBufferView = defaultValue(object.extras._pipeline.absolutePath, object.bufferView);
-    if (defined(originalPathOrBufferView) && defined(writtenResourceMap[originalPathOrBufferView])) {
-        object.bufferView = writtenResourceMap[originalPathOrBufferView];
+    const resourceId = object.extras._pipeline.resourceId;
+    if (defined(resourceId) && defined(writtenResourceMap[resourceId])) {
+        object.bufferView = writtenResourceMap[resourceId];
         return;
     }
 
@@ -132,8 +132,8 @@ function writeBufferView(gltf, object, writtenResourceMap) {
     object.bufferView = addBuffer(gltf, source);
 
     // Save the bufferView so we can re-use it later
-    if (defined(originalPathOrBufferView)) {
-        writtenResourceMap[originalPathOrBufferView] = object.bufferView;
+    if (defined(resourceId)) {
+        writtenResourceMap[resourceId] = object.bufferView;
     }
 }
 
@@ -200,13 +200,12 @@ function getRelativePath(gltf, object, index, extension, options) {
 }
 
 function writeFile(gltf, object, index, extension, writtenResourceMap, options) {
-    const bufferView = object.bufferView;
     delete object.bufferView;
 
     // If we've written this resource before, re-use the uri
-    const originalPathOrBufferView = defaultValue(object.extras._pipeline.absolutePath, bufferView);
-    if (defined(originalPathOrBufferView) && defined(writtenResourceMap[originalPathOrBufferView])) {
-        object.uri = writtenResourceMap[originalPathOrBufferView];
+    const resourceId = object.extras._pipeline.resourceId;
+    if (defined(resourceId) && defined(writtenResourceMap[resourceId])) {
+        object.uri = writtenResourceMap[resourceId];
         return;
     }
 
@@ -218,7 +217,7 @@ function writeFile(gltf, object, index, extension, writtenResourceMap, options)
     }
 
     // Save the uri so we can re-use it later
-    if (defined(originalPathOrBufferView)) {
-        writtenResourceMap[originalPathOrBufferView] = object.uri;
+    if (defined(resourceId)) {
+        writtenResourceMap[resourceId] = object.uri;
     }
 }