diff --git a/antarest/study/business/binding_constraint_management.py b/antarest/study/business/binding_constraint_management.py
index ad163e3fe5..f2825a2448 100644
--- a/antarest/study/business/binding_constraint_management.py
+++ b/antarest/study/business/binding_constraint_management.py
@@ -6,10 +6,10 @@
     ConstraintAlreadyExistError,
     ConstraintIdNotFoundError,
     DuplicateConstraintName,
+    InvalidConstraintName,
     MissingDataError,
     NoBindingConstraintError,
     NoConstraintError,
-    InvalidConstraintName,
 )
 from antarest.matrixstore.model import MatrixData
 from antarest.study.business.utils import execute_or_add_commands
@@ -17,7 +17,7 @@
 from antarest.study.storage.rawstudy.model.filesystem.config.binding_constraint import BindingConstraintFrequency
 from antarest.study.storage.rawstudy.model.filesystem.config.model import transform_name_to_id
 from antarest.study.storage.storage_service import StudyStorageService
-from antarest.study.storage.variantstudy.business.matrix_constants.binding_constraint.series import (
+from antarest.study.storage.variantstudy.business.matrix_constants.binding_constraint.series_before_v87 import (
     default_bc_hourly,
     default_bc_weekly_daily,
 )