diff --git a/lib/postgresql_interface.js b/lib/postgresql_interface.js
index d5289adb..b35275ee 100644
--- a/lib/postgresql_interface.js
+++ b/lib/postgresql_interface.js
@@ -190,10 +190,10 @@ function removePendingTx(client, sessionId, cb) {
 function insertOutgoingTx(client, deviceFingerprint, tx, totals, cb) {
   var sendAmount = computeSendAmount(tx, totals);
   var stage = 'partial_request';
-  var source = tx.fiat ? 'machine' : 'timeout';
+  var authority = tx.fiat ? 'machine' : 'timeout';
   var satoshis = sendAmount.satoshis;
   var fiat = sendAmount.fiat;
-  insertTx(client, deviceFingerprint, tx, satoshis, fiat, stage, source,
+  insertTx(client, deviceFingerprint, tx, satoshis, fiat, stage, authority,
       function(err) {
 
     if (err) return cb(err);
@@ -207,18 +207,18 @@ function insertOutgoingCompleteTx(client, deviceFingerprint, tx, cb) {
   if (!tx.fiat) return cb();
 
   var stage = 'final_request';
-  var source = 'machine';
+  var authority = 'machine';
   var satoshis = tx.satoshis;
   var fiat = tx.fiat;
-  insertTx(client, deviceFingerprint, tx, satoshis, fiat, stage, source, cb);
+  insertTx(client, deviceFingerprint, tx, satoshis, fiat, stage, authority, cb);
 }
 
 function insertTx(client, deviceFingerprint, tx, satoshis, fiat, stage,
-    source, cb) {
+    authority, cb) {
   var fields = [
     'session_id',
     'stage',
-    'source',
+    'authority',
     'incoming',
     'device_fingerprint',
     'to_address',
@@ -232,7 +232,7 @@ function insertTx(client, deviceFingerprint, tx, satoshis, fiat, stage,
   var values = [
     tx.txId,
     stage,
-    source,
+    authority,
     tx.incoming,
     deviceFingerprint,
     tx.toAddress,
@@ -308,19 +308,19 @@ exports.sentCoins = function sentCoins(tx, satoshis, fee, error, txHash) {
   });
 };
 
-exports.addIncomingTx = function addIncomingTx(deviceFingerprint, tx, source,
+exports.addIncomingTx = function addIncomingTx(deviceFingerprint, tx, authority,
     satoshisReceived, cb) {
   connect(function(err, client, done) {
-    function maybeRemovePending(client, sessionId, source, cb) {
-      if (source === 'published') return cb();
+    function maybeRemovePending(client, sessionId, authority, cb) {
+      if (authority === 'published') return cb();
       removePendingTx(client, sessionId, cb);
     }
 
     if (err) return cb(err);
     async.waterfall([
       async.apply(silentQuery, client, 'BEGIN', null),
-      async.apply(maybeRemovePending, client, tx.sessionId, source),
-      async.apply(insertTx, client, tx, satoshisReceived, 0, 'deposit', source)
+      async.apply(maybeRemovePending, client, tx.sessionId, authority),
+      async.apply(insertTx, client, tx, satoshisReceived, 0, 'deposit', authority)
     ], function(err) {
       if (err) {
         rollback(client, done);
@@ -358,7 +358,7 @@ exports.addInitialIncoming = function addInitialIncoming(deviceFingerprint, tx,
 };
 
 function lastTxStatus(client, deviceFingerprint, sessionId, cb) {
-  var sql = 'SELECT satoshis, source FROM transactions ' +
+  var sql = 'SELECT satoshis, authority FROM transactions ' +
     'WHERE device_fingerprint=$1 AND session_id=$2 AND incoming=$3 ' +
     'ORDER BY id DESC LIMIT 1';
   var values = [deviceFingerprint, sessionId, true];
@@ -400,7 +400,7 @@ exports.dispenseStatus = function dispenseStatus(deviceFingerprint, sessionId,
       // TODO: handle multiple deposits
       var status = (lastTx.satoshis < requiredSatoshis) ?
         'insufficientFunds' :
-        lastTx.source;
+        lastTx.authority;
       cb(null, status);
     });
   });
diff --git a/migrations/001-initial.js b/migrations/001-initial.js
index 8723c34d..e7ecb8ff 100644
--- a/migrations/001-initial.js
+++ b/migrations/001-initial.js
@@ -25,20 +25,6 @@ exports.up = function(next) {
     'created timestamp NOT NULL DEFAULT now() ' +
     ')',
 
-    'CREATE TABLE IF NOT EXISTS transactions ( ' +
-    'id uuid PRIMARY KEY, ' +
-    'status text NOT NULL, ' +
-    'tx_hash text, ' +
-    'device_fingerprint text, ' +
-    'to_address text NOT NULL, ' +
-    'satoshis integer, ' +
-    'currency_code text, ' +
-    'fiat decimal, ' +
-    'error text, ' +
-    'created timestamp NOT NULL DEFAULT now(), ' +
-    'completed timestamp ' +
-    ')',
-
     'CREATE TABLE IF NOT EXISTS users ( ' +
     'id serial PRIMARY KEY, ' +
     'userName text NOT NULL UNIQUE, ' +
diff --git a/migrations/004-transactions-reload.js b/migrations/004-transactions-reload.js
index f04ed8bf..e787cc5e 100644
--- a/migrations/004-transactions-reload.js
+++ b/migrations/004-transactions-reload.js
@@ -8,32 +8,30 @@ exports.up = function(next) {
   var stages = ['initial_request', 'partial_request', 'final_request',
     'partial_send', 'deposit', 'dispense_request', 'dispense'].
     map(singleQuotify).join(',');
-  var sources = ['timeout', 'machine', 'pending', 'published',
+  var authorizations = ['timeout', 'machine', 'pending', 'published',
     'authorized', 'rejected'].map(singleQuotify).join(',');
+
   var sqls = [
     'CREATE TYPE transaction_stage AS ENUM (' + stages + ')',
-    'CREATE TYPE transaction_source AS ENUM (' + sources + ')',
-    'ALTER TABLE transactions DROP IF EXISTS completed',
-    'ALTER TABLE transactions DROP CONSTRAINT transactions_pkey',
-    'ALTER TABLE transactions RENAME id TO session_id',
-    'ALTER TABLE transactions ADD COLUMN id SERIAL',
-    'UPDATE transactions SET id = DEFAULT',
-    'ALTER TABLE transactions ADD PRIMARY KEY (id)',
-    'CREATE INDEX ON transactions (session_id)',
-    'ALTER TABLE transactions ADD COLUMN incoming boolean DEFAULT false',
-    'ALTER TABLE transactions ADD COLUMN stage transaction_stage NULL',
-    'ALTER TABLE transactions ADD COLUMN source transaction_source NULL',
-    'ALTER TABLE transactions ADD COLUMN fee integer NOT NULL DEFAULT 0',
-    'ALTER TABLE transactions ADD COLUMN error text NULL',
-    'ALTER TABLE transactions ALTER COLUMN fiat SET DEFAULT 0',
-    'ALTER TABLE transactions ALTER COLUMN satoshis SET DEFAULT 0',
-    'ALTER TABLE transactions ALTER COLUMN fiat SET NOT NULL',
-    'ALTER TABLE transactions ALTER COLUMN satoshis SET NOT NULL',
-    'ALTER TABLE transactions ADD CONSTRAINT transactions_unique_source ' +
-      'UNIQUE (session_id,to_address,stage,source)',
+    'CREATE TYPE transaction_authority AS ENUM (' + authorizations + ')',
 
-    'ALTER TABLE transactions DROP COLUMN status',
-    // Convert stages, source to NOT NULL
+    'CREATE TABLE transactions ( ' +
+    'id serial PRIMARY KEY, ' +
+    'session_id uuid UNIQUE NOT NULL, ' +
+    'device_fingerprint text, ' +
+    'to_address text NOT NULL, ' +
+    'satoshis integer NOT NULL DEFAULT 0, ' +
+    'fiat decimal NOT NULL DEFAULT 0, ' +
+    'currency_code text NOT NULL, ' +
+    'fee integer NOT NULL DEFAULT 0, ' +
+    'incoming boolean NOT NULL, ' +
+    'stage transaction_stage NOT NULL, ' +
+    'authority transaction_authority NOT NULL, ' +
+    'tx_hash text, ' +
+    'error text, ' +
+    'created timestamp NOT NULL DEFAULT now(), ' +
+    'UNIQUE (session_id, to_address, stage, authority) ' +
+    ')',
 
     'CREATE TABLE pending_transactions ( ' +
     'id serial PRIMARY KEY, ' +
@@ -59,7 +57,13 @@ exports.up = function(next) {
     'created timestamp NOT NULL DEFAULT now() ' +
     ')'
   ];
-  db.multi(sqls, next);
+
+  // Need to call this separately to ignore error
+  // in case transactions doesn't exist
+  var renameSql = 'ALTER TABLE transactions RENAME TO transactions_old';
+  db.silentQuery(renameSql, function() {
+    db.multi(sqls, next);
+  });
 };
 
 exports.down = function(next) {
diff --git a/migrations/db.js b/migrations/db.js
index 16b76e8b..ae191313 100644
--- a/migrations/db.js
+++ b/migrations/db.js
@@ -10,14 +10,24 @@ exports.query = function query(sql, cb) {
   exports.multi([sql], cb);
 };
 
-exports.multi = function multi(sqls, cb) {
+exports.silentQuery = function query(sql, cb) {
   pg.connect(conString, function(err, client, done) {
-    if (err) throw err;
-
-    async.eachSeries(sqls, client.query.bind(client), function(err) {
+    if (err) return cb(err);
+    client.query(sql, function(err) {
       done(true);
-      if (err) throw err;
-      cb();
+      cb(err);
+    });
+  });
+};
+
+exports.multi = function multi(sqls, cb) {
+  pg.connect(conString, function(err, client, done) {
+    if (err) return cb(err);
+
+    async.eachSeries(sqls, client.query.bind(client), function(err) {
+      done(true);
+      if (err) console.log(err);
+      cb(err);
     });
   });
 };