diff --git a/importApp/src/config/default.json b/importApp/src/config/default.json
index 5e12be72..a4f3d0ad 100644
--- a/importApp/src/config/default.json
+++ b/importApp/src/config/default.json
@@ -1,5 +1,5 @@
 {
-  "repoRawContent": "https://raw.githubusercontent.com/medialab/ricardo_data/",
+  "repoRawContent": "https://raw.githubusercontent.com/medialab/ricardo_data",
   "apiUri": "https://api.github.com/repos/medialab/ricardo_data/contents",
   "branchUri": "https://api.github.com/repos/medialab/ricardo_data/branches",
   "referenceUri": "https://api.github.com/repos/medialab/ricardo_data/git/refs",
diff --git a/importApp/src/containers/DataPublish/DataPublish.js b/importApp/src/containers/DataPublish/DataPublish.js
index d0c0ecf5..8f67e517 100644
--- a/importApp/src/containers/DataPublish/DataPublish.js
+++ b/importApp/src/containers/DataPublish/DataPublish.js
@@ -25,6 +25,7 @@ import {downloadFlow, downloadTable} from '../../utils/fileExporter';
 import GithubAuthModal from '../../components/GithubAuthModal';
 
 import {SOURCE_SLUG_FILENAME} from '../../constants';
+import {owner, repoName} from '../../config/default';
 
 
 class DataPublish extends React.Component {
@@ -45,7 +46,7 @@ class DataPublish extends React.Component {
 
   render () {
     const {flows, repoData, referenceTables, originalLength} = this.props;
-    const {selectedBranch, remoteUpdateStatus} = repoData;
+    const {selectedBranch, remoteUpdateStatus, lastCommit, remoteUpdateMessage} = repoData;
     const repoTables = repoData.tables;
 
     let updatedTables = [];
@@ -68,16 +69,15 @@ class DataPublish extends React.Component {
     // we need to source metadata to generate source filename
     const sources = keyBy(referenceTables.sources, s => s.slug);
     const parsedFlows = csvParse(flows.data.map(d => d.join(',')).join('\n'));
-    console.log(sources);
     const groupedFlows = groupBy(parsedFlows, (item) => SOURCE_SLUG_FILENAME(sources[item['source']]));
-    console.log(groupedFlows);
+
 
     const handleUpdateRemoteFiles= (auth) => {
       this.handleCloseModal();
 
       const flowFiles = Object.keys(groupedFlows).map((file) => {
         return {
-          fileName: `${file}.csv`,
+          fileName: `flows/${file}.csv`,
           data: groupedFlows[file]
         }
       });
@@ -142,8 +142,8 @@ class DataPublish extends React.Component {
           </Control>
         </Field>
         <Field>
-          {remoteUpdateStatus === 'loading' && <Help isColor='success'>updating files on github, please wait...</Help>}
-          {remoteUpdateStatus === 'updated' && <Help isColor='success'>files are updated on github</Help>}
+          {remoteUpdateStatus === 'loading' && <Help isColor='success'>updating files on github: {remoteUpdateMessage}...</Help>}
+          {remoteUpdateStatus === 'updated' && <Help isColor='success'>files have been commited on github see <a href={`https://github.com/${owner}/${repoName}/commit/${lastCommit}`}>commit details</a></Help>}
           {remoteUpdateStatus === 'fail' && <Help isColor='danger'>fail to update files on github</Help>}
         </Field>
         <GithubAuthModal 
diff --git a/importApp/src/redux/modules/repoData.js b/importApp/src/redux/modules/repoData.js
index 3dad58a2..ad89e7d9 100644
--- a/importApp/src/redux/modules/repoData.js
+++ b/importApp/src/redux/modules/repoData.js
@@ -6,11 +6,11 @@ import Octokat from 'octokat';
 
 import { Base64 } from 'js-base64';
 import {
-  csvFormat
+  csvFormat,
+  csvParse
 } from 'd3-dsv';
 
 import {INIT_TABLES} from './referenceTables';
-import { SET_STEP } from './ui';
 
 export const FETCH_TABLE_REQUEST = 'FETCH_TABLE_REQUEST';
 export const FETCH_TABLE_SUCCESS = 'FETCH_TABLE_SUCCESS';
@@ -39,6 +39,7 @@ export const LOGIN_CREATE_BRANCH_SUCCESS = 'LOGIN_CREATE_BRANCH_SUCCESS';
 export const LOGIN_CREATE_BRANCH_FAILURE = 'LOGIN_CREATE_BRANCH_FAILURE';
 
 export const UPDATE_REMOTE_FILES_REQUEST = 'UPDATE_REMOTE_FILES_REQUEST';
+export const UPDATE_REMOTE_FILES_LOG = 'UPDATE_REMOTE_FILES_LOG';
 export const UPDATE_REMOTE_FILES_SUCCESS = 'UPDATE_REMOTE_FILES_SUCCESS';
 export const UPDATE_REMOTE_FILES_FAILURE = 'UPDATE_REMOTE_FILES_FAILURE';
 
@@ -147,8 +148,7 @@ export const updateRemoteFiles = (payload) => (dispatch) => {
   const {files, branch, auth} = payload;
 
   const github = new Octokat({
-    username: auth.username,
-    password: auth.token
+    token: auth.token
   });
 
   dispatch(async () => {
@@ -157,6 +157,25 @@ export const updateRemoteFiles = (payload) => (dispatch) => {
       let baseReference = await repo.git.refs(`heads/${branch}`).fetch();
       let treeItems = [];
       for (let file of files) {
+        
+        if (!file.sha && file.fileName.includes('flows')){
+          //new file flow ?
+          //check if file already exists
+          dispatch({
+            type: UPDATE_REMOTE_FILES_LOG,
+            payload: `downloading existing flows file ${file.fileName}`
+          });
+          const exists = await get(`${repoRawContent}/${branch}/data/${file.fileName}`,{ responseType: 'text', responseEncoding: 'utf8'})
+          if (exists.status === 200) {
+            // append new rows at end of the existing file
+            file.data = csvParse(exists.data).concat(file.data) 
+          }
+          // else it's a new file nothing to do
+        }
+        dispatch({
+          type: UPDATE_REMOTE_FILES_LOG,
+          payload: `uploading ${file.fileName}`
+        });
         let fileGit = await repo.git.blobs.create({content: Base64.encode(csvFormat(file.data)), encoding: 'base64'});
         let filePath = `data/${file.fileName}`;
         treeItems.push({
@@ -166,11 +185,18 @@ export const updateRemoteFiles = (payload) => (dispatch) => {
           type: "blob"
         })
       } 
-  
+      dispatch({
+        type: UPDATE_REMOTE_FILES_LOG,
+        payload: `creating tree`
+      });
       let tree = await repo.git.trees.create({
         tree: treeItems,
         base_tree: baseReference.object.sha
       });
+      dispatch({
+        type: UPDATE_REMOTE_FILES_LOG,
+        payload: `creating commit`
+      });
       let commit = await repo.git.commits.create({
         message: auth.message || DEFAULT_MESSAGE,
         tree: tree.sha,
@@ -180,6 +206,7 @@ export const updateRemoteFiles = (payload) => (dispatch) => {
       baseReference.update({sha: commit.sha});
       dispatch({
         type: UPDATE_REMOTE_FILES_SUCCESS,
+        payload: commit.sha
       });
     } catch(err) {
       console.error(err);
@@ -333,12 +360,21 @@ export default function reducer(state = initialState, action){
     case UPDATE_REMOTE_FILES_REQUEST:
       return {
         ...state,
-        remoteUpdateStatus: 'loading'
+        remoteUpdateStatus: 'loading',
+        lastCommit: null,
+        remoteUpdateMessage: null
       }
+    case UPDATE_REMOTE_FILES_LOG:
+        return {
+          ...state,
+          remoteUpdateStatus: 'loading',
+          remoteUpdateMessage: payload 
+        }
     case UPDATE_REMOTE_FILES_SUCCESS:
       return {
         ...state,
         remoteUpdateStatus: "updated",
+        lastCommit: payload
       }
     case UPDATE_REMOTE_FILES_FAILURE:
       return {