diff --git a/music_kraken/objects/parents.py b/music_kraken/objects/parents.py
index 92b6514..93bb3a9 100644
--- a/music_kraken/objects/parents.py
+++ b/music_kraken/objects/parents.py
@@ -29,7 +29,7 @@ class InnerData:
     _refers_to_instances: set = None
 
     def __init__(self, object_type, **kwargs):
-        self._refers_to_instances = set()
+        self._refers_to_instances =set()
         
         # initialize the default values
         self.__default_values = {}
@@ -105,6 +105,8 @@ class OuterProxy:
 
         self._fetched_from: dict = {}
         self._inner: InnerData = InnerData(type(self), **kwargs)
+        self._inner._refers_to_instances.add(self)
+
         self.__init_collections__()
 
         for name, data_list in collection_data.items():
@@ -191,15 +193,10 @@ class OuterProxy:
             a, b = b, a
 
         a._inner.__merge__(b._inner, override=override)
+        a._inner._refers_to_instances.update(b._inner._refers_to_instances)
 
-        if len(b._inner._refers_to_instances) > 1:
-            for instance in b._inner._refers_to_instances:
-                instance._inner = a._inner
-
-        b._inner = a._inner
-
-        b._inner._refers_to_instances.add(a)
-        b._inner._refers_to_instances.add(b)
+        for instance in b._inner._refers_to_instances:
+            instance._inner = a._inner
 
     def mark_as_fetched(self, *url_hash_list: List[str]):
         for url_hash in url_hash_list: