diff --git a/src/common/tools/grpc/Constraints.py b/src/common/tools/grpc/Constraints.py
index f33e7b1efc387a2cf45ea855a806dd09b82f0673..07f0b7782dbd93479774af6324683753f906c5a1 100644
--- a/src/common/tools/grpc/Constraints.py
+++ b/src/common/tools/grpc/Constraints.py
@@ -160,7 +160,7 @@ def update_constraint_sla_latency(constraints, e2e_latency_ms : float) -> Constr
     return constraint
 
 def update_constraint_sla_availability(
-    constraints, num_disjoint_paths : int, all_active : bool
+    constraints, num_disjoint_paths : int, all_active : bool, availability : float
 ) -> Constraint:
     for constraint in constraints:
         if constraint.WhichOneof('constraint') != 'sla_availability': continue
@@ -171,6 +171,7 @@ def update_constraint_sla_availability(
 
     constraint.sla_availability.num_disjoint_paths = num_disjoint_paths
     constraint.sla_availability.all_active = all_active
+    constraint.sla_availability.availability = availability
     return constraint
 
 def update_constraint_sla_isolation(constraints, isolation_levels : List[int]) -> Constraint:
@@ -239,7 +240,8 @@ def copy_constraints(source_constraints, target_constraints):
             sla_availability = source_constraint.sla_availability
             num_disjoint_paths = sla_availability.num_disjoint_paths
             all_active = sla_availability.all_active
-            update_constraint_sla_availability(target_constraints, num_disjoint_paths, all_active)
+            availability = sla_availability.availability
+            update_constraint_sla_availability(target_constraints, num_disjoint_paths, all_active, availability)
 
         elif constraint_kind == 'sla_isolation':
             sla_isolation = source_constraint.sla_isolation