diff --git a/app/models/legacy/dnskey.rb b/app/models/legacy/dnskey.rb
index 49f8570ee..3fa47f48b 100644
--- a/app/models/legacy/dnskey.rb
+++ b/app/models/legacy/dnskey.rb
@@ -1,5 +1,8 @@
 module Legacy
   class Dnskey < Db
     self.table_name = :dnskey
+
+    belongs_to :object_registry, foreign_key: :id
+    belongs_to :object, foreign_key: :id
   end
 end
diff --git a/app/models/legacy/nsset.rb b/app/models/legacy/nsset.rb
index 9b8a84469..6cdb09404 100644
--- a/app/models/legacy/nsset.rb
+++ b/app/models/legacy/nsset.rb
@@ -2,6 +2,8 @@ module Legacy
   class Nsset < Db
     self.table_name = :nsset
 
+    belongs_to :object, foreign_key: :id
+    belongs_to :object_state, foreign_key: :id, primary_key: :object_id
     has_many :hosts, foreign_key: :nssetid
   end
 end
diff --git a/lib/tasks/import.rake b/lib/tasks/import.rake
index 315ed2093..6ffb27fd1 100644
--- a/lib/tasks/import.rake
+++ b/lib/tasks/import.rake
@@ -212,7 +212,7 @@ namespace :import do
       end
     end
 
-    Contact.import contact_columns, contacts, validate: false, timestamps: false
+    Contact.import contact_columns, contacts, {validate: false, timestamps: false}
     puts "-----> Imported #{count} new contacts in #{(Time.zone.now.to_f - start).round(2)} seconds"
   end
 
@@ -267,6 +267,8 @@ namespace :import do
       creator_str
       updator_str
       legacy_domain_id
+      created_at
+      updated_at
     )
 
     dnskey_columns = %w(
@@ -279,6 +281,7 @@ namespace :import do
       creator_str
       updator_str
       legacy_domain_id
+      updated_at
     )
 
     domains, nameservers, dnskeys, domain_contacts = [], [], [], []
@@ -353,7 +356,8 @@ namespace :import do
         end
 
         # nameservers
-        x.nsset.hosts.each do |host|
+        nsset = x.nsset
+        nsset.hosts.each do |host|
           ip_maps = host.host_ipaddr_maps
           ips = {}
           ip_maps.each do |ip_map|
@@ -368,7 +372,9 @@ namespace :import do
             ips[:ipv6].try(:strip),
             x.object_registry.try(:registrar).try(:name),
             x.object.try(:registrar).try(:name) ? x.object.try(:registrar).try(:name) : x.object_registry.try(:registrar).try(:name),
-            x.id
+            x.id,
+            nsset.object_registry.try(:crdate),
+            nsset.object.read_attribute(:update).nil? ? x.object_registry.try(:crdate) : x.object.read_attribute(:update)
           ]
         end if x.nsset && x.nsset.hosts
 
@@ -382,15 +388,16 @@ namespace :import do
             1, # ds_digest_type /SHA1)
             x.object_registry.try(:registrar).try(:name),
             x.object.try(:registrar).try(:name) ? x.object.try(:registrar).try(:name) : x.object_registry.try(:registrar).try(:name),
-            x.id
+            x.id,
+            key.object.read_attribute(:update).nil? ? x.object_registry.try(:crdate) : x.object.read_attribute(:update)
           ]
         end
 
         if index % 10000 == 0 && index != 0
           Domain.import domain_columns, domains, {validate: false, timestamps: false}
-          Nameserver.import nameserver_columns, nameservers, validate: false
-          Dnskey.import dnskey_columns, dnskeys, validate: false
-          DomainContact.import domain_contact_columns, domain_contacts, validate: false
+          Nameserver.import nameserver_columns, nameservers, {validate: false, timestamps: false}
+          Dnskey.import dnskey_columns, dnskeys, {validate: false, timestamps: false}
+          DomainContact.import domain_contact_columns, domain_contacts, validate: false # created_at is taken from contact at the bottom
           domains, nameservers, dnskeys, domain_contacts = [], [], [], []
         end
       rescue => e
@@ -400,9 +407,9 @@ namespace :import do
     end
 
     Domain.import domain_columns, domains, {validate: false, timestamps: false}
-    Nameserver.import nameserver_columns, nameservers, validate: false
-    Dnskey.import dnskey_columns, dnskeys, validate: false
-    DomainContact.import domain_contact_columns, domain_contacts, validate: false
+    Nameserver.import nameserver_columns, nameservers, {validate: false, timestamps: false}
+    Dnskey.import dnskey_columns, dnskeys, {validate: false, timestamps: false}
+    DomainContact.import domain_contact_columns, domain_contacts, {validate: false, timestamps: false}
 
     puts '-----> Updating relations...'
 
@@ -429,7 +436,9 @@ namespace :import do
     # contacts
     ActiveRecord::Base.connection.execute(
       "UPDATE domain_contacts "\
-      "SET contact_id = contacts.id "\
+      "SET contact_id = contacts.id, "\
+      "updated_at = contacts.updated_at, "\
+      "created_at = contacts.created_at "\
       "FROM contacts "\
       "WHERE contacts.legacy_id = legacy_contact_id "\
       "AND legacy_contact_id IS NOT NULL "\