diff --git a/themis/importexport/sync.py b/themis/importexport/sync.py
index 9a586ab..9c9feba 100644
--- a/themis/importexport/sync.py
+++ b/themis/importexport/sync.py
@@ -286,6 +286,8 @@ class SyncFromThemis(UtilityView):
                         related_doc = getattr(self.questions_folder, related_doc_id)
                     elif hasattr(self.documents_folder, related_doc_id):
                         related_doc = getattr(self.documents_folder, related_doc_id)
+                    elif hasattr(self.convocations_folder, related_doc_id):
+                        related_doc = getattr(self.convocations_folder, related_doc_id)
                     else:
                         continue
                     related_docs.append(self.intids.getId(related_doc))