diff --git a/config/application.rb b/config/application.rb
index 073ba55b..135ca1f2 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -13,7 +13,7 @@
 module Mbis
   class Application < Rails::Application
     # Initialize configuration defaults for originally generated Rails version.
-    config.load_defaults 6.1
+    config.load_defaults 7.0
 
     # Configuration for the application, engines, and railties goes here.
     #
@@ -70,5 +70,18 @@ class Application < Rails::Application
 
     # TODO: Old Rails 6.0 default; disable this
     ActiveSupport.utc_to_local_returns_utc_offset_times = false
+
+    # TODO: Old Rails 6.1 default; disable this
+    # Fails rails test test/models/concerns/workflow/model_test.rb:180
+    config.active_support.executor_around_test_case = false
+
+    # TODO: Old Rails 6.1 default; disable this
+    # Fixtures are incomplete, e.g. test/fixtures/memberships.yml needs to be defined
+    config.active_record.verify_foreign_keys_for_fixtures = false
+
+    # Old Rails 6.1 default, required by devise_saml_authenticatable version 1.9.1
+    # cf. https://github.com/apokalipto/devise_saml_authenticatable/issues/237
+    # If we don't have this, the redirect when logging out from ADFS throws an application error.
+    Rails.application.config.action_controller.raise_on_open_redirects = false
   end
 end
diff --git a/config/initializers/new_framework_defaults_7_0.rb b/config/initializers/new_framework_defaults_7_0.rb
deleted file mode 100644
index 099df580..00000000
--- a/config/initializers/new_framework_defaults_7_0.rb
+++ /dev/null
@@ -1,145 +0,0 @@
-# rubocop:disable Layout/LineLength, Layout/EmptyLines
-# Be sure to restart your server when you modify this file.
-#
-# This file eases your Rails 7.0 framework defaults upgrade.
-#
-# Uncomment each configuration one by one to switch to the new default.
-# Once your application is ready to run with all new defaults, you can remove
-# this file and set the `config.load_defaults` to `7.0`.
-#
-# Read the Guide for Upgrading Ruby on Rails for more info on each option.
-# https://guides.rubyonrails.org/upgrading_ruby_on_rails.html
-
-# `button_to` view helper will render `<button>` element, regardless of whether
-# or not the content is passed as the first argument or as a block.
-# Rails.application.config.action_view.button_to_generates_button_tag = true
-
-# `stylesheet_link_tag` view helper will not render the media attribute by default.
-# Rails.application.config.action_view.apply_stylesheet_media_default = false
-
-# Change the digest class for the key generators to `OpenSSL::Digest::SHA256`.
-# Changing this default means invalidate all encrypted messages generated by
-# your application and, all the encrypted cookies. Only change this after you
-# rotated all the messages using the key rotator.
-#
-# See upgrading guide for more information on how to build a rotator.
-# https://guides.rubyonrails.org/v7.0/upgrading_ruby_on_rails.html
-# Rails.application.config.active_support.key_generator_hash_digest_class = OpenSSL::Digest::SHA256
-
-# Change the digest class for ActiveSupport::Digest.
-# Changing this default means that for example Etags change and
-# various cache keys leading to cache invalidation.
-# Rails.application.config.active_support.hash_digest_class = OpenSSL::Digest::SHA256
-
-# Don't override ActiveSupport::TimeWithZone.name and use the default Ruby
-# implementation.
-# Rails.application.config.active_support.remove_deprecated_time_with_zone_name = true
-
-# Calls `Rails.application.executor.wrap` around test cases.
-# This makes test cases behave closer to an actual request or job.
-# Several features that are normally disabled in test, such as Active Record query cache
-# and asynchronous queries will then be enabled.
-# Rails.application.config.active_support.executor_around_test_case = true
-
-# Set both the `:open_timeout` and `:read_timeout` values for `:smtp` delivery method.
-# Rails.application.config.action_mailer.smtp_timeout = 5
-
-# The ActiveStorage video previewer will now use scene change detection to generate
-# better preview images (rather than the previous default of using the first frame
-# of the video).
-# Rails.application.config.active_storage.video_preview_arguments =
-#   "-vf 'select=eq(n\\,0)+eq(key\\,1)+gt(scene\\,0.015),loop=loop=-1:size=2,trim=start_frame=1' -frames:v 1 -f image2"
-
-# Automatically infer `inverse_of` for associations with a scope.
-# Rails.application.config.active_record.automatic_scope_inversing = true
-
-# Raise when running tests if fixtures contained foreign key violations
-# Rails.application.config.active_record.verify_foreign_keys_for_fixtures = true
-
-# Disable partial inserts.
-# This default means that all columns will be referenced in INSERT queries
-# regardless of whether they have a default or not.
-# Rails.application.config.active_record.partial_inserts = false
-
-# Protect from open redirect attacks in `redirect_back_or_to` and `redirect_to`.
-# Rails.application.config.action_controller.raise_on_open_redirects = true
-
-# Change the variant processor for Active Storage.
-# Changing this default means updating all places in your code that
-# generate variants to use image processing macros and ruby-vips
-# operations. See the upgrading guide for detail on the changes required.
-# The `:mini_magick` option is not deprecated; it's fine to keep using it.
-# Rails.application.config.active_storage.variant_processor = :vips
-
-# Enable parameter wrapping for JSON.
-# Previously this was set in an initializer. It's fine to keep using that initializer if you've customized it.
-# To disable parameter wrapping entirely, set this config to `false`.
-# Rails.application.config.action_controller.wrap_parameters_by_default = true
-
-# Specifies whether generated namespaced UUIDs follow the RFC 4122 standard for namespace IDs provided as a
-# `String` to `Digest::UUID.uuid_v3` or `Digest::UUID.uuid_v5` method calls.
-#
-# See https://guides.rubyonrails.org/configuring.html#config-active-support-use-rfc4122-namespaced-uuids for
-# more information.
-# Rails.application.config.active_support.use_rfc4122_namespaced_uuids = true
-
-# Change the default headers to disable browsers' flawed legacy XSS protection.
-Rails.application.config.action_dispatch.default_headers = {
-  'X-Frame-Options' => 'SAMEORIGIN',
-  'X-XSS-Protection' => '0',
-  'X-Content-Type-Options' => 'nosniff',
-  'X-Download-Options' => 'noopen',
-  'X-Permitted-Cross-Domain-Policies' => 'none',
-  'Referrer-Policy' => 'strict-origin-when-cross-origin'
-}
-
-
-# ** Please read carefully, this must be configured in config/application.rb **
-# Change the format of the cache entry.
-# Changing this default means that all new cache entries added to the cache
-# will have a different format that is not supported by Rails 6.1 applications.
-# Only change this value after your application is fully deployed to Rails 7.0
-# and you have no plans to rollback.
-# When you're ready to change format, add this to `config/application.rb` (NOT this file):
-#  config.active_support.cache_format_version = 7.0
-
-
-# Cookie serializer: 2 options
-#
-# If you're upgrading and haven't set `cookies_serializer` previously, your cookie serializer
-# is `:marshal`. The default for new apps is `:json`.
-#
-# Rails.application.config.action_dispatch.cookies_serializer = :json
-#
-#
-# To migrate an existing application to the `:json` serializer, use the `:hybrid` option.
-#
-# Rails transparently deserializes existing (Marshal-serialized) cookies on read and
-# re-writes them in the JSON format.
-#
-# It is fine to use `:hybrid` long term; you should do that until you're confident *all* your cookies
-# have been converted to JSON. To keep using `:hybrid` long term, move this config to its own
-# initializer or to `config/application.rb`.
-#
-# Rails.application.config.action_dispatch.cookies_serializer = :hybrid
-#
-#
-# If your cookies can't yet be serialized to JSON, keep using `:marshal` for backward-compatibility.
-#
-# If you have configured the serializer elsewhere, you can remove this section of the file.
-#
-# See https://guides.rubyonrails.org/action_controller_overview.html#cookies for more information.
-
-# Change the return value of `ActionDispatch::Request#content_type` to the Content-Type header without modification.
-# Rails.application.config.action_dispatch.return_only_request_media_type_on_content_type = false
-
-# Active Storage `has_many_attached` relationships will default to replacing the current collection instead of appending to it.
-# Thus, to support submitting an empty collection, the `file_field` helper will render an hidden field `include_hidden` by default when `multiple_file_field_include_hidden` is set to `true`.
-# See https://guides.rubyonrails.org/configuring.html#config-active-storage-multiple-file-field-include-hidden for more information.
-# Rails.application.config.active_storage.multiple_file_field_include_hidden = true
-
-# ** Please read carefully, this must be configured in config/application.rb (NOT this file) **
-# Disables the deprecated #to_s override in some Ruby core classes
-# See https://guides.rubyonrails.org/configuring.html#config-active-support-disable-to-s-conversion for more information.
-# config.active_support.disable_to_s_conversion = true
-# rubocop:enable Layout/LineLength, Layout/EmptyLines
diff --git a/config/initializers/wrap_parameters.rb b/config/initializers/wrap_parameters.rb
deleted file mode 100644
index bbfc3961..00000000
--- a/config/initializers/wrap_parameters.rb
+++ /dev/null
@@ -1,14 +0,0 @@
-# Be sure to restart your server when you modify this file.
-
-# This file contains settings for ActionController::ParamsWrapper which
-# is enabled by default.
-
-# Enable parameter wrapping for JSON. You can disable this by setting :format to an empty array.
-ActiveSupport.on_load(:action_controller) do
-  wrap_parameters format: [:json]
-end
-
-# To enable root element in JSON for ActiveRecord objects.
-# ActiveSupport.on_load(:active_record) do
-#   self.include_root_in_json = true
-# end
diff --git a/test/fixtures/project_outputs.yml b/test/fixtures/project_outputs.yml
index 0c60fe33..015371e4 100644
--- a/test/fixtures/project_outputs.yml
+++ b/test/fixtures/project_outputs.yml
@@ -2,8 +2,8 @@
 
 one:
   project: one
-  output: MyString
+  output: one
 
 two:
   project: two
-  output: MyString
+  output: one
diff --git a/test/fixtures/pseudo/death_data.yml b/test/fixtures/pseudo/death_data.yml
index 52d5f908..4338d9a6 100644
--- a/test/fixtures/pseudo/death_data.yml
+++ b/test/fixtures/pseudo/death_data.yml
@@ -1,4 +1,5 @@
 death1:
   death_dataid: 1
 # created in ppatients.yml
-  ppatient: patient3
+#  ppatient: patient3
+  ppatient_id: 3
diff --git a/test/fixtures/pseudo/ppatients.yml b/test/fixtures/pseudo/ppatients.yml
index 79b1ccd0..0c11d862 100644
--- a/test/fixtures/pseudo/ppatients.yml
+++ b/test/fixtures/pseudo/ppatients.yml
@@ -8,20 +8,20 @@ patient1:
 patient2:
   id: 2
   e_batch_id: 1
-  type: Pseudo::Pbirth
+  type: Pseudo::Birth
   pseudo_id1: some_long_id_2_1
   pseudo_id2: ""
 
 patient3:
   id: 3
   e_batch_id: 1
-  type: Pseudo::Pdeath
+  type: Pseudo::Death
   pseudo_id1: some_long_id_3_1
   pseudo_id2: ""
 
 patient4:
   id: 4
   e_batch_id: 1
-  type: Pseudo::Pmolecular
+  type: Pseudo::Molecular
   pseudo_id1: some_long_id_4_1
   pseudo_id2: ""
diff --git a/test/fixtures/pseudo/prescription_data.yml b/test/fixtures/pseudo/prescription_data.yml
index e050e2c4..b621ac1c 100644
--- a/test/fixtures/pseudo/prescription_data.yml
+++ b/test/fixtures/pseudo/prescription_data.yml
@@ -6,7 +6,8 @@ prescription1:
   bnf_code: XYZ45
   pat_age: 44
 # created in ppatients.yml
-  ppatient: patient1
+#  ppatient: patient1
+  ppatient_id: 1
 
 prescription2:
   prescription_dataid: 2
@@ -15,4 +16,5 @@ prescription2:
   drug_paid: £99.98
   bnf_code: FML02
   pat_age: 28
-  ppatient: patient1
+#  ppatient: patient1
+  ppatient_id: 1
diff --git a/test/fixtures/users.yml b/test/fixtures/users.yml
index c11c903f..a6f0fff7 100644
--- a/test/fixtures/users.yml
+++ b/test/fixtures/users.yml
@@ -298,6 +298,12 @@ delegate_user3:
   division_id: 1
   delegate_user: true
 
+mbis_delegate:
+  email: mbis.delegate@phe.gov.uk
+  first_name: mbis
+  last_name: delegate
+  delegate_user: true
+
 approved_project_user:
   email: approved_project_user@phe.gov.uk
   first_name: Approved