2 files changed, 41 insertions, 0 deletions
diff --git a/app/scripts/migrations/026.js b/app/scripts/migrations/026.js
new file mode 100644
index 000000000..ef0ed0542
--- /dev/null
+++ b/app/scripts/migrations/026.js
@@ -0,0 +1,40 @@
+const version = 26
+
+/*
+
+This migration moves the identities stored in the KeyringController
+ into the PreferencesController
+
+*/
+
+const clone = require('clone')
+
+module.exports = {
+  version,
+  migrate (originalVersionedData) {
+    const versionedData = clone(originalVersionedData)
+    versionedData.meta.version = version
+    try {
+      const state = versionedData.data
+      versionedData.data = transformState(state)
+    } catch (err) {
+      console.warn(`MetaMask Migration #${version}` + err.stack)
+      return Promise.reject(err)
+    }
+    return Promise.resolve(versionedData)
+  },
+}
+
+function transformState (state) {
+  if (!state.KeyringController || !state.PreferencesController) {
+    return
+  }
+
+  if (!state.KeyringController.walletNicknames) {
+    return state
+  }
+
+  state.PreferencesController.identities = state.KeyringController.walletNicknames
+  delete state.KeyringController.walletNicknames
+  return state
+}
diff --git a/app/scripts/migrations/index.js b/app/scripts/migrations/index.js
index 6c4a51b32..04d90bfff 100644
--- a/app/scripts/migrations/index.js
+++ b/app/scripts/migrations/index.js
@@ -36,4 +36,5 @@ module.exports = [
   require('./023'),
   require('./024'),
   require('./025'),
+  require('./026'),
 ]