diff --git a/lib/action/model/corpus.py b/lib/action/model/corpus.py
index 15ad2be980..0854488f99 100644
--- a/lib/action/model/corpus.py
+++ b/lib/action/model/corpus.py
@@ -190,10 +190,11 @@ async def _restore_prev_query_params(self, req_args: Union[RequestArgsProxy, JSO
             True if query params have been loaded else False (which is still not an error)
         """
         url_q = req_args.getlist('q')[:]
-        with plugins.runtime.QUERY_PERSISTENCE as query_persistence:
+        with plugins.runtime.QUERY_PERSISTENCE as query_persistence, plugins.runtime.DISPATCH_HOOK as dh:
             if len(url_q) > 0 and query_persistence.is_valid_id(url_q[0]):
                 self._q_code = url_q[0][1:]
-                self._active_q_data = await query_persistence.open(self._q_code)
+                aqdata = await query_persistence.open(self._q_code)
+                self._active_q_data = await dh.transform_stored_query_data(aqdata)
                 # !!! must create a copy here otherwise _q_data (as prev query)
                 # will be rewritten by self.args.q !!!
                 if self._active_q_data is not None:
diff --git a/lib/plugin_types/dispatch_hook.py b/lib/plugin_types/dispatch_hook.py
index 54387f75d6..a512da5800 100644
--- a/lib/plugin_types/dispatch_hook.py
+++ b/lib/plugin_types/dispatch_hook.py
@@ -54,3 +54,14 @@ async def post_dispatch(self, plugin_ctx, methodname, action_metadata):
             methodname -- processed action method
             action_metadata -- action metadata (added by @inject)
         """
+
+    async def transform_stored_query_data(self, data):
+        """
+        When KonText processes a URL with a query ID, it always restores required
+        internal arguments representing the URL using the loaded values. This
+        function transforms values immediately after they are loaded,
+        i.e. before they are applied elsewhere.
+
+        It can be used e.g. to solve legacy values stored in query persistence database.
+        """
+        return data
diff --git a/lib/plugins/ucnk_dispatch_hook/__init__.py b/lib/plugins/ucnk_dispatch_hook/__init__.py
index cd65558afb..40744cb2a3 100644
--- a/lib/plugins/ucnk_dispatch_hook/__init__.py
+++ b/lib/plugins/ucnk_dispatch_hook/__init__.py
@@ -22,7 +22,7 @@
 from dataclasses import dataclass
 
 import plugins
-from action.errors import ServiceUnavailableException
+from action.errors import ServiceUnavailableException, ImmediateRedirectException
 from action.plugin.ctx import PluginCtx
 from action.props import ActionProps
 from dataclasses_json import LetterCase, dataclass_json
@@ -73,8 +73,23 @@ async def _check_client(self, plugin_ctx: PluginCtx):
                     await self._db.hash_del(self.bot_clients_key, client_ip)
 
     async def pre_dispatch(self, plugin_ctx, action_props: ActionProps, request):
+        arg = request.args.get('corpname', [''])[0]
+        if arg.startswith('aranea/'):
+            raise ImmediateRedirectException(plugin_ctx.updated_current_url(dict(corpname=arg[len('aranea/'):])))
         await self._check_client(plugin_ctx)
 
+    async def transform_stored_query_data(self, data):
+        if 'corpora' in data:
+            normalized_corpora = []
+            for corp in data['corpora']:
+                if corp.startswith('aranea/'):
+                    normalized_corpora.append(corp[len('aranea/'):])
+                else:
+                    normalized_corpora.append(corp)
+            data['corpora'] = normalized_corpora
+        return data
+
+
 
 @inject(plugins.runtime.DB)
 def create_instance(conf, db: KeyValueStorage):