diff --git a/tests/admin_pages/test_block.py b/tests/admin_pages/test_block.py
index 98080ac14..c0246e468 100644
--- a/tests/admin_pages/test_block.py
+++ b/tests/admin_pages/test_block.py
@@ -257,6 +257,55 @@ def test_block_delete(pub):
     assert 'This block is still used' in resp
 
 
+def test_block_export_overwrite(pub):
+    create_superuser(pub)
+    BlockDef.wipe()
+    block = BlockDef()
+    block.name = 'foobar'
+    block.fields = [fields.StringField(id='123', required=True, label='Test')]
+    block.store()
+
+    app = login(get_app(pub))
+    resp = app.get('/backoffice/forms/blocks/%s/' % block.id)
+    resp = resp.click(href=re.compile('^export$'))
+    xml_export = resp.text
+
+    block.slug = 'new-slug'
+    block.name = 'New foobar'
+    block.fields = [fields.StringField(id='123', required=True, label='Test bebore overwrite')]
+    block.store()
+
+    resp = app.get('/backoffice/forms/blocks/%s/' % block.id)
+    resp = resp.click('Overwrite')
+    resp = resp.form.submit('cancel').follow()
+    resp = resp.click('Overwrite')
+    resp = resp.form.submit()
+    assert 'There were errors processing your form.' in resp
+
+    resp.form['file'] = Upload('block', xml_export.encode('utf-8'))
+    resp = resp.form.submit()
+    resp = resp.follow()
+    assert BlockDef.count() == 1
+
+    block.refresh_from_storage()
+    assert block.fields[0].label == 'Test'
+    assert block.name == 'foobar'
+    assert block.slug == 'new-slug'  # not overwritten
+
+    # unknown reference
+    block.fields = [fields.StringField(id='1', data_source={'type': 'foobar'})]
+    block.store()
+    resp = app.get('/backoffice/forms/blocks/%s/' % block.id)
+    resp = resp.click(href=re.compile('^export$'))
+    xml_export = resp.text
+    resp = app.get('/backoffice/forms/blocks/%s/' % block.id)
+    resp = resp.click('Overwrite')
+    resp.form['file'] = Upload('block', xml_export.encode('utf-8'))
+    resp = resp.form.submit()
+    assert 'Invalid File (Unknown referenced objects)' in resp
+    assert '<ul><li>Unknown datasources: foobar</li></ul>' in resp
+
+
 def test_block_edit_duplicate_delete_field(pub):
     create_superuser(pub)
     BlockDef.wipe()
@@ -453,14 +502,14 @@ def test_block_edit_field_warnings(pub):
     blockdef.store()
     resp = app.get('/backoffice/forms/blocks/%s/' % blockdef.id)
     assert 'more than 30 fields' not in resp.text
-    assert '<div id="new-field"><h3>New Field</h3>' in resp.text
+    assert resp.pyquery('#new-field')
     assert resp.pyquery('#fields-list a[title="Duplicate"]').length
 
     blockdef.fields.extend([fields.StringField(id='%d' % i, label='field %d' % i) for i in range(21, 51)])
     blockdef.store()
     resp = app.get('/backoffice/forms/blocks/%s/' % blockdef.id)
     assert 'This block of fields contains 60 fields.' in resp.text
-    assert '<div id="new-field"><h3>New Field</h3>' not in resp.text
+    assert not resp.pyquery('#new-field')
     assert not resp.pyquery('#fields-list a[title="Duplicate"]').length
 
 
diff --git a/tests/admin_pages/test_card.py b/tests/admin_pages/test_card.py
index 473945591..ea3ef2749 100644
--- a/tests/admin_pages/test_card.py
+++ b/tests/admin_pages/test_card.py
@@ -1035,7 +1035,7 @@ def test_card_edit_field_warnings(pub):
     resp = app.get('/backoffice/cards/%s/fields/' % carddef.id)
     assert 'more than 200 fields' not in resp.text
     assert 'first field should be of type "page"' in resp.text
-    assert '<div id="new-field"><h3>New Field</h3>' in resp.text
+    assert resp.pyquery('#new-field')
 
     carddef.fields.extend([fields.StringField(id='%d' % i, label='field %d' % i) for i in range(10, 210)])
     carddef.store()
@@ -1049,7 +1049,7 @@ def test_card_edit_field_warnings(pub):
     resp = app.get('/backoffice/cards/%s/fields/' % carddef.id)
     assert 'This card model contains 410 fields.' in resp.text
     assert 'first field should be of type "page"' in resp.text
-    assert '<div id="new-field"><h3>New Field</h3>' not in resp.text
+    assert not resp.pyquery('#new-field')
     assert '>Duplicate<' not in resp.text
 
 
diff --git a/tests/admin_pages/test_form.py b/tests/admin_pages/test_form.py
index 7760472e2..8480e59eb 100644
--- a/tests/admin_pages/test_form.py
+++ b/tests/admin_pages/test_form.py
@@ -3600,7 +3600,7 @@ def test_form_edit_field_warnings(pub):
     resp = app.get('/backoffice/forms/%s/fields/' % formdef.id)
     assert 'more than 200 fields' not in resp.text
     assert 'first field should be of type "page"' in resp.text
-    assert '<div id="new-field"><h3>New Field</h3>' in resp.text
+    assert resp.pyquery('#new-field')
 
     formdef.fields.extend([fields.StringField(id='%d' % i, label='field %d' % i) for i in range(10, 210)])
     formdef.store()
@@ -3615,7 +3615,7 @@ def test_form_edit_field_warnings(pub):
     assert 'This form contains 410 fields.' in resp.text
     assert 'no new fields can be added.' in resp.text
     assert 'first field should be of type "page"' in resp.text
-    assert '<div id="new-field"><h3>New Field</h3>' not in resp.text
+    assert not resp.pyquery('#new-field')
     assert '>Duplicate<' not in resp.text
     assert resp.pyquery('aside .errornotice')
     assert not resp.pyquery('aside form[action=new]')
@@ -3628,7 +3628,7 @@ def test_form_edit_field_warnings(pub):
 
     resp = app.get('/backoffice/forms/%s/fields/' % formdef.id)
     assert 'no new fields should be added.' in resp.text
-    assert '<div id="new-field"><h3>New Field</h3>' in resp.text
+    assert resp.pyquery('#new-field')
     assert '>Duplicate<' in resp.text
     assert not resp.pyquery('aside .errornotice')
     assert resp.pyquery('aside form[action=new]')
diff --git a/wcs/admin/blocks.py b/wcs/admin/blocks.py
index ab68f5fd7..7aeab5ba3 100644
--- a/wcs/admin/blocks.py
+++ b/wcs/admin/blocks.py
@@ -54,6 +54,7 @@ class BlockDirectory(FieldsDirectory):
         'inspect',
         'duplicate',
         ('history', 'snapshots_dir'),
+        'overwrite',
     ]
     field_def_page_class = BlockFieldDefPage
     blacklisted_types = ['page', 'table', 'table-select', 'tablerows', 'ranked-items', 'blocks', 'computed']
@@ -106,6 +107,14 @@ class BlockDirectory(FieldsDirectory):
         r = TemplateIO(html=True)
         r += htmltext('<div id="appbar">')
         r += htmltext('<h2>%s</h2>') % self.objectdef.name
+        r += htmltext('<span class="actions">')
+        r += htmltext('<a class="extra-actions-menu-opener"></a>')
+        r += htmltext('<ul class="extra-actions-menu">')
+        r += htmltext('<li><a href="export">%s</a></li>') % _('Export')
+        r += htmltext('<li><a href="delete" rel="popup">%s</a></li>') % _('Delete')
+        r += htmltext('</ul>')
+        r += htmltext('<a href="settings" rel="popup" role="button">%s</a>') % _('Settings')
+        r += htmltext('</span>')
         r += htmltext('</div>')
         r += utils.last_modification_block(obj=self.objectdef)
         r += get_session().display_message()
@@ -132,17 +141,25 @@ class BlockDirectory(FieldsDirectory):
 
     def get_new_field_form_sidebar(self, page_id):
         r = TemplateIO(html=True)
-        r += htmltext('<ul id="sidebar-actions">')
-        r += htmltext('<li><a href="delete" rel="popup">%s</a></li>') % _('Delete')
-        r += htmltext('<li><a href="duplicate" rel="popup">%s</a></li>') % _('Duplicate')
-        r += htmltext('<li><a href="export">%s</a></li>') % _('Export')
-        if get_publisher().snapshot_class:
-            r += htmltext('<li><a rel="popup" href="history/save">%s</a></li>') % _('Save snapshot')
-            r += htmltext('<li><a href="history/">%s</a></li>') % _('History')
-        r += htmltext('<li><a href="inspect">%s</a></li>') % _('Inspector')
-        r += htmltext('<li><a href="settings" rel="popup">%s</a></li>') % _('Settings')
-        r += htmltext('</ul>')
         r += super().get_new_field_form_sidebar(page_id=page_id)
+        r += htmltext('<h3>%s</h3>') % _('Actions')
+        r += htmltext('<ul class="sidebar--buttons">')
+        r += htmltext('<li><a class="button button-paragraph" href="duplicate" rel="popup">%s</a>') % _(
+            'Duplicate'
+        )
+        if get_publisher().snapshot_class:
+            r += htmltext('<li><a class="button button-paragraph" href="history/save">%s</a>') % _(
+                'Save snapshot'
+            )
+        r += htmltext('<li><a class="button button-paragraph" rel="popup" href="overwrite">%s</a>') % _(
+            'Overwrite'
+        )
+        r += htmltext('</ul>')
+        r += htmltext('<h3>%s</h3>') % _('Navigation')
+        r += htmltext('<ul class="sidebar--buttons">')
+        r += htmltext('<li><a class="button button-paragraph" href="history/">%s</a></li>') % _('History')
+        r += htmltext('<li><a class="button button-paragraph" href="inspect">%s</a></li>') % _('Inspector')
+        r += htmltext('</ul>')
         return r.getvalue()
 
     def delete(self):
@@ -209,6 +226,41 @@ class BlockDirectory(FieldsDirectory):
             content_type='application/x-wcs-form',
         )
 
+    def overwrite(self):
+        form = Form(enctype='multipart/form-data')
+        form.widgets.append(
+            HtmlWidget(
+                '<div class="warningnotice"><p>%s</p></div>'
+                % _('Field data will be lost if overwriting with an incompatible block.')
+            )
+        )
+        form.add(FileWidget, 'file', title=_('File'), required=True)
+        form.add_submit('submit', _('Submit'))
+        form.add_submit('cancel', _('Cancel'))
+        if form.get_widget('cancel').parse():
+            return redirect('.')
+
+        if form.is_submitted() and not form.has_errors():
+            try:
+                return self.overwrite_submit(form)
+            except ValueError:
+                pass
+
+        get_response().breadcrumb.append(('overwrite', _('Overwrite')))
+        get_response().set_title(title=_('Overwrite'))
+        r = TemplateIO(html=True)
+        r += htmltext('<h2>%s</h2>') % _('Overwrite')
+        r += form.render()
+        return r.getvalue()
+
+    def overwrite_submit(self, form):
+        blockdef = BlocksDirectory.import_blockdef(form)
+        self.objectdef.name = blockdef.name
+        self.objectdef.digest_template = blockdef.digest_template
+        self.objectdef.fields = blockdef.fields
+        self.objectdef.store(comment=_('Overwritten'))
+        return redirect('.')
+
     def settings(self):
         get_response().breadcrumb.append(('settings', _('Settings')))
         form = Form()
@@ -409,7 +461,8 @@ class BlocksDirectory(Directory):
         r += form.render()
         return r.getvalue()
 
-    def import_submit(self, form):
+    @classmethod
+    def import_blockdef(cls, form):
         fp = form.get_widget('file').parse().fp
 
         error, reason = False, None
@@ -433,6 +486,10 @@ class BlocksDirectory(Directory):
             form.set_error('file', msg)
             raise ValueError()
 
+        return blockdef
+
+    def import_submit(self, form):
+        blockdef = self.import_blockdef(form)
         initial_blockdef_name = blockdef.name
         blockdef_names = [x.name for x in BlockDef.select()]
         copy_no = 1
diff --git a/wcs/admin/fields.py b/wcs/admin/fields.py
index 73ac78902..d5e63b604 100644
--- a/wcs/admin/fields.py
+++ b/wcs/admin/fields.py
@@ -527,8 +527,8 @@ class FieldsDirectory(Directory):
                 )
                 return r.getvalue()
 
-        r += htmltext('<div id="new-field">')
         r += htmltext('<h3>%s</h3>') % _('New Field')
+        r += htmltext('<div id="new-field">')
         get_request().form = None  # ignore the eventual ?page=x
         form = self.get_new_field_form(page_id)
         r += form.render()
diff --git a/wcs/qommon/static/css/dc2/admin.scss b/wcs/qommon/static/css/dc2/admin.scss
index 4056d7618..05c38a511 100644
--- a/wcs/qommon/static/css/dc2/admin.scss
+++ b/wcs/qommon/static/css/dc2/admin.scss
@@ -222,13 +222,8 @@ div#new-action, div#new-trigger, div#new-field {
 	}
 }
 
-div#new-field {
-	margin: 2em 0 4px 0;
-	padding: 5px 5px;
-}
-
-div#new-field form {
-	margin-bottom: 2em;
+form#import-fields {
+	margin-top: 1em;
 }
 
 aside#sidebar div.news h3,