diff --git a/app/models/log.rb b/app/models/log.rb
index 195f63ba7..00a178e2b 100644
--- a/app/models/log.rb
+++ b/app/models/log.rb
@@ -50,7 +50,13 @@ class Log < ApplicationRecord
   scope :has_old_form_id, -> { where.not(old_form_id: nil) }
   scope :imported_2023_with_old_form_id, -> { imported.filter_by_year(2023).has_old_form_id }
   scope :imported_2023, -> { imported.filter_by_year(2023) }
-  scope :filter_by_organisation, ->(org, _user = nil) { where(owning_organisation: org).or(where(managing_organisation: org)) }
+  # TODO: CLDC-4273: use .union in filter_by_organisation rather than raw SQL
+  scope :filter_by_organisation, lambda { |orgs, _user = nil|
+    owned = unscoped { where(owning_organisation: orgs).select(:id) }
+    managed = unscoped { where(managing_organisation: orgs).select(:id) }
+
+    where("#{table_name}.id = ANY(ARRAY(#{owned.to_sql} UNION #{managed.to_sql}))")
+  }
   scope :filter_by_owning_organisation, ->(owning_organisation, _user = nil) { where(owning_organisation:) }
   scope :filter_by_managing_organisation, ->(managing_organisation, _user = nil) { where(managing_organisation:) }
   scope :filter_by_user_text_search, ->(param, user) { where(assigned_to: User.visible(user).search_by(param)) }
diff --git a/yarn.lock b/yarn.lock
index ff3fe1709..9798885e6 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2880,9 +2880,9 @@ ignore@^5.1.9:
   integrity sha512-MAb38BcSbH0eHNBxn7ql2NH/kX33OkB3lZ1BNdh7ENeRChHTYsTvWrMubiIAMNS2llXEEgZ1MUOBtXChP3kaFQ==
 
 immutable@^4.0.0:
-  version "4.3.7"
-  resolved "https://registry.yarnpkg.com/immutable/-/immutable-4.3.7.tgz#c70145fc90d89fb02021e65c84eb0226e4e5a381"
-  integrity sha512-1hqclzwYwjRDFLjcFxOM5AYkkG0rpFPpr1RLPMEuGczoS7YA8gLhy8SWXYRAA/XwfEHpfo3cw5JGioS32fnMRw==
+  version "4.3.8"
+  resolved "https://registry.yarnpkg.com/immutable/-/immutable-4.3.8.tgz#02d183c7727fb2bb1d5d0380da0d779dce9296a7"
+  integrity sha512-d/Ld9aLbKpNwyl0KiM2CT1WYvkitQ1TSvmRtkcV8FKStiDoA7Slzgjmb/1G2yhKM1p0XeNOieaTbFZmU1d3Xuw==
 
 import-fresh@^3.2.1, import-fresh@^3.3.0:
   version "3.3.0"