diff --git a/splitjson/widgets.py b/splitjson/widgets.py
index 7237c0e..d3ea61d 100644
--- a/splitjson/widgets.py
+++ b/splitjson/widgets.py
@@ -14,6 +14,24 @@
     from django.forms.utils import flatatt
 
 
+def merge_dicts(src_dict, dst_dict):
+    for k, v in src_dict.items():
+        if k not in dst_dict:
+            dst_dict[k] = v
+        else:
+            if type(v) == type(dst_dict[k]):
+                if isinstance(v, dict):
+                    merge_dicts(v, dst_dict[k])
+                elif isinstance(v, list):
+                    dst_dict[k].extend(v)
+                else:
+                    dst_dict[k] = v
+            else:
+                dst_dict[k] = v
+
+    return dst_dict
+
+
 class SplitJSONWidget(forms.Widget):
 
     def __init__(self, attrs=None, newline='<br/>\n', sep='__', debug=False):
@@ -72,9 +90,11 @@ def _prepare_as_ul(self, l):
 
     def _to_pack_up(self, root_node, raw_data):
 
-        copy_raw_data = copy.deepcopy(raw_data)
         result = []
 
+        ordered_keys = sorted(raw_data.keys())
+        copy_raw_data = copy.deepcopy(raw_data)
+
         def _to_parse_key(k, v):
             if k.find(self.separator) != -1:
                 apx, _, nk = k.rpartition(self.separator)
@@ -84,8 +104,10 @@ def _to_parse_key(k, v):
                     l = []
                     obj = {}
                     index = None
+                    l.append(v)
                     if apx != root_node:
-                        for key, val in copy_raw_data.items():
+                        for key in [ok for ok in ordered_keys if ok in copy_raw_data]:
+                            val = copy_raw_data[key]
                             head, _, t = key.rpartition(self.separator)
                             _, _, index = head.rpartition(self.separator)
                             if key is k:
@@ -103,7 +125,6 @@ def _to_parse_key(k, v):
                         if obj:
                             for i in obj:
                                 l.append(obj[i])
-                    l.append(v)
                     return _to_parse_key(apx, l)
                 except ValueError:
                     # parse dict
@@ -128,7 +149,8 @@ def _to_parse_key(k, v):
             else:
                 return v
 
-        for k, v in raw_data.iteritems():
+        for k in ordered_keys:
+            v = raw_data[k]
             if k in copy_raw_data:
                 # to transform value from list to string
                 v = v[0] if isinstance(v, list) and len(v) is 1 else v
@@ -140,7 +162,7 @@ def _to_parse_key(k, v):
                     try:
                         result.extend(d)
                     except:
-                        result.update(d)
+                        merge_dicts(d, result)
         return result
 
     def value_from_datadict(self, data, files, name):