diff --git a/lib/interpreters/split_clustering.rb b/lib/interpreters/split_clustering.rb
index 05126d875..8da5db3db 100644
--- a/lib/interpreters/split_clustering.rb
+++ b/lib/interpreters/split_clustering.rb
@@ -680,7 +680,7 @@ def self.build_partial_service_vrp(service_vrp, partial_service_ids, available_v
       sub_vrp.points.uniq!
       sub_vrp = add_corresponding_entity_skills(entity, sub_vrp)
 
-      sub_vrp_hash = JSON.parse(sub_vrp.to_json, symbolize_names: true)
+      sub_vrp_hash = sub_vrp.as_json
 
       vehicle_ids = sub_vrp_hash[:vehicles]&.map{ |v| v[:id] } || []
       sub_vrp_hash[:services]&.each{ |service|
diff --git a/models/relation.rb b/models/relation.rb
index 336f5cde8..a8ef6c1ac 100644
--- a/models/relation.rb
+++ b/models/relation.rb
@@ -43,16 +43,18 @@ class Relation < Base
 
     def self.create(hash)
       # TODO: remove it after the linked_ids is replaced with linked_service_ids in the api definition
-      exclusive = [:linked_service_ids, :linked_ids, :linked_services].freeze
-      raise "#{exclusive} fields are mutually exclusive" if hash.keys.count{ |k| exclusive.include? k } > 1
+      if hash.key?(:linked_service_ids) && hash.key?(:linked_ids) && hash[:linked_service_ids] != hash[:linked_ids]
+        raise 'linked_service_ids and linked_ids should have the same content if both used'
+      end
+
+      # Raise condition required due to the use of lib/helper deep_copy
+      raise 'linked_services should not belong to vrp hash' if hash.key?(:linked_services)
 
       # TODO: remove it after the linked_ids is replaced with linked_service_ids in the api definition
       if hash.key?(:linked_ids)
         hash[:linked_service_ids] = hash[:linked_ids]
       elsif hash.key?(:linked_service_ids)
         hash[:linked_ids] = hash[:linked_service_ids]
-      elsif hash.key?(:linked_services)
-        hash[:linked_ids] = hash[:linked_services].map(&:id)
       end
 
       super(hash)
diff --git a/wrappers/wrapper.rb b/wrappers/wrapper.rb
index fefa84818..07f949e55 100644
--- a/wrappers/wrapper.rb
+++ b/wrappers/wrapper.rb
@@ -981,13 +981,10 @@ def simplify_complex_multi_pickup_or_delivery_shipments(vrp, solution = nil, opt
               quantity.value = -shipment_quantity + extra_per_quantity[q_index]
             }
 
-            new_shipment_relation = Helper.deep_copy(
-              relation,
-              override: {
-                linked_ids: nil, # this line can be removed when linked_ids is replaced with linked_service_ids
-                linked_services: relation.linked_services.map{ |s| s.id == service.id ? new_service : s }
-              }
-            )
+            relation_hash = relation.as_json
+            relation_hash.delete(:linked_ids)
+            relation_hash[:linked_service_ids] = relation.linked_services.map{ |s| s.id == service.id ? new_service.id : s.id }
+            new_shipment_relation = Models::Relation.create(relation_hash)
 
             new_service.relations << new_shipment_relation