Carry over documentations to equal lessons in same validity range

aleksis/apps/alsijil/schema.py

@@ -120,7 +120,11 @@ class LessonDocumentationMutation(graphene.Mutation):
             and lesson_documentation.lesson_period
         ):
             lesson_documentation.carry_over_data(
-                LessonPeriod.objects.filter(lesson=lesson_documentation.lesson_period.lesson), True
+                LessonPeriod.objects.filter(
+                    lesson__in=lesson_period.lesson._equal_lessons,
+                    lesson_period__lesson__validity=lesson_period.lesson.validity,
+                ),
+                True,
             )
 
         return LessonDocumentationMutation(lesson_documentation=lesson_documentation)