diff --git a/hyrax/app/models/concerns/complex_relation.rb b/hyrax/app/models/concerns/complex_relation.rb
index 336680e1f32fe7c69ed99bbe667c00e1f712b797..f2d0eae68bea0b280a94821522278a3e36884b78 100644
--- a/hyrax/app/models/concerns/complex_relation.rb
+++ b/hyrax/app/models/concerns/complex_relation.rb
@@ -4,10 +4,6 @@ class ComplexRelation < ActiveTriples::Resource
   configure type: ::RDF::Vocab::PROV.Association
   property :title, predicate: ::RDF::Vocab::DC.title
   property :url, predicate: ::RDF::Vocab::MODS.locationUrl
-  property :complex_identifier, predicate: ::RDF::Vocab::MODS.identifierGroup,
-            class_name:"ComplexIdentifier"
-  accepts_nested_attributes_for :complex_identifier
-  #property :relationship, predicate: ::RDF::Vocab::EBUCore.roleDefinition
   property :relationship, predicate: ::RDF::Vocab::EBUCore.roleType
 
   ## Necessary to get AT to create hash URIs.
diff --git a/hyrax/spec/models/concerns/complex_relation_spec.rb b/hyrax/spec/models/concerns/complex_relation_spec.rb
index 3144fd6d7b8c9d0dfec94da554d4ee66bd30cd38..2c0adf269f50738e881cbf73834d77b57438d396 100644
--- a/hyrax/spec/models/concerns/complex_relation_spec.rb
+++ b/hyrax/spec/models/concerns/complex_relation_spec.rb
@@ -49,10 +49,6 @@ RSpec.describe ComplexRelation do
         {
           title: 'My first publication',
           url: 'http://example.com/relation',
-          complex_identifier_attributes: [{
-            identifier: ['123456'],
-            label: ['local']
-          }],
           relationship: 'IsPartOf'
         }
       ]
@@ -60,9 +56,6 @@ RSpec.describe ComplexRelation do
     expect(@obj.complex_relation.first).to be_kind_of ActiveTriples::Resource
     expect(@obj.complex_relation.first.title).to eq ['My first publication']
     expect(@obj.complex_relation.first.url).to eq ['http://example.com/relation']
-    expect(@obj.complex_relation.first.complex_identifier.first).to be_kind_of ActiveTriples::Resource
-    expect(@obj.complex_relation.first.complex_identifier.first.identifier).to eq ['123456']
-    expect(@obj.complex_relation.first.complex_identifier.first.label).to eq ['local']
     expect(@obj.complex_relation.first.relationship).to eq ['IsPartOf']
   end
 
@@ -90,7 +83,6 @@ RSpec.describe ComplexRelation do
       expect(@obj.complex_relation.first).to be_kind_of ActiveTriples::Resource
       expect(@obj.complex_relation.first.title).to eq ['A relation title']
       expect(@obj.complex_relation.first.url).to be_empty
-      expect(@obj.complex_relation.first.complex_identifier).to be_empty
       expect(@obj.complex_relation.first.relationship).to eq ['IsPartOf']
     end
 
@@ -104,34 +96,13 @@ RSpec.describe ComplexRelation do
           }
         ]
       }
+
       expect(@obj.complex_relation.first).to be_kind_of ActiveTriples::Resource
       expect(@obj.complex_relation.first.title).to be_empty
       expect(@obj.complex_relation.first.url).to eq ['http://example.com/relation']
-      expect(@obj.complex_relation.first.complex_identifier).to be_empty
       expect(@obj.complex_relation.first.relationship).to eq ['isPreviousVersionOf']
     end
 
-    it 'creates a relation active triple resource with identifier and relationship' do
-      @obj = ExampleWork2.new
-      @obj.attributes = {
-        complex_relation_attributes: [
-          {
-            complex_identifier_attributes: [{
-              identifier: ['123456']
-            }],
-            relationship: 'isSupplementTo'
-          }
-        ]
-      }
-      expect(@obj.complex_relation.first).to be_kind_of ActiveTriples::Resource
-      expect(@obj.complex_relation.first.title).to be_empty
-      expect(@obj.complex_relation.first.url).to be_empty
-      expect(@obj.complex_relation.first.complex_identifier.first).to be_kind_of ActiveTriples::Resource
-      expect(@obj.complex_relation.first.complex_identifier.first.identifier).to eq ['123456']
-      expect(@obj.complex_relation.first.complex_identifier.first.label).to be_empty
-      expect(@obj.complex_relation.first.relationship).to eq ['isSupplementTo']
-    end
-
     it 'creates a relation active triple resource with title, url and relationship' do
       @obj = ExampleWork2.new
       @obj.attributes = {
@@ -146,19 +117,15 @@ RSpec.describe ComplexRelation do
       expect(@obj.complex_relation.first).to be_kind_of ActiveTriples::Resource
       expect(@obj.complex_relation.first.title).to eq ['A relation title']
       expect(@obj.complex_relation.first.url).to eq ['http://example.com/relation']
-      expect(@obj.complex_relation.first.complex_identifier).to be_empty
       expect(@obj.complex_relation.first.relationship).to eq ['isContinuedBy']
     end
 
-    it 'creates a relation active triple resource with title, identifier and relationship' do
+    it 'creates a relation active triple resource with title and relationship' do
       @obj = ExampleWork2.new
       @obj.attributes = {
         complex_relation_attributes: [
           {
             title: 'A relation title',
-            complex_identifier_attributes: [{
-              identifier: ['123456']
-            }],
             relationship: 'isContinuedBy'
           }
         ]
@@ -166,23 +133,16 @@ RSpec.describe ComplexRelation do
       expect(@obj.complex_relation.first).to be_kind_of ActiveTriples::Resource
       expect(@obj.complex_relation.first.title).to eq ['A relation title']
       expect(@obj.complex_relation.first.url).to be_empty
-      expect(@obj.complex_relation.first.complex_identifier.first).to be_kind_of ActiveTriples::Resource
-      expect(@obj.complex_relation.first.complex_identifier.first.identifier).to eq ['123456']
-      expect(@obj.complex_relation.first.complex_identifier.first.label).to be_empty
       expect(@obj.complex_relation.first.relationship).to eq ['isContinuedBy']
     end
 
-    it 'creates a relation active triple resource with title, url, identifier and relationship' do
+    it 'creates a relation active triple resource with title, url and relationship' do
       @obj = ExampleWork2.new
       @obj.attributes = {
         complex_relation_attributes: [
           {
             title: 'A relation title',
             url: 'http://example.com/relation',
-            complex_identifier_attributes: [{
-              identifier: ['123456'],
-              label: 'Local'
-            }],
             relationship: 'isDocumentedBy'
           }
         ]
@@ -190,31 +150,21 @@ RSpec.describe ComplexRelation do
       expect(@obj.complex_relation.first).to be_kind_of ActiveTriples::Resource
       expect(@obj.complex_relation.first.title).to eq ['A relation title']
       expect(@obj.complex_relation.first.url).to eq ['http://example.com/relation']
-      expect(@obj.complex_relation.first.complex_identifier.first).to be_kind_of ActiveTriples::Resource
-      expect(@obj.complex_relation.first.complex_identifier.first.identifier).to eq ['123456']
-      expect(@obj.complex_relation.first.complex_identifier.first.label).to eq ['Local']
       expect(@obj.complex_relation.first.relationship).to eq ['isDocumentedBy']
     end
 
-    it 'creates a relation active triple resource with url, identifier and relationship' do
+    it 'creates a relation active triple resource with url and relationship' do
       @obj = ExampleWork2.new
       @obj.attributes = {
         complex_relation_attributes: [
           {
             url: 'http://example.com/relation',
-            complex_identifier_attributes: [{
-              identifier: ['123456'],
-              label: 'Local'
-            }],
             relationship: 'isDerivedFrom'
           }
         ]
       }
       expect(@obj.complex_relation.first).to be_kind_of ActiveTriples::Resource
       expect(@obj.complex_relation.first.url).to eq ['http://example.com/relation']
-      expect(@obj.complex_relation.first.complex_identifier.first).to be_kind_of ActiveTriples::Resource
-      expect(@obj.complex_relation.first.complex_identifier.first.identifier).to eq ['123456']
-      expect(@obj.complex_relation.first.complex_identifier.first.label).to eq ['Local']
       expect(@obj.complex_relation.first.relationship).to eq ['isDerivedFrom']
     end
 
@@ -242,22 +192,7 @@ RSpec.describe ComplexRelation do
       expect(@obj.complex_relation).to be_empty
     end
 
-    it 'rejects relation active triple with just identifier and no relationship' do
-      @obj = ExampleWork2.new
-      @obj.attributes = {
-        complex_relation_attributes: [
-          {
-            complex_identifier_attributes: [{
-              identifier: ['123456'],
-              label: 'Local'
-            }],
-          }
-        ]
-      }
-      expect(@obj.complex_relation).to be_empty
-    end
-
-    it 'rejects relation active triple with just reltionship and no identifying information' do
+    it 'rejects relation active triple with just relationship and no identifying information' do
       @obj = ExampleWork2.new
       @obj.attributes = {
         complex_relation_attributes: [
@@ -269,17 +204,13 @@ RSpec.describe ComplexRelation do
       expect(@obj.complex_relation).to be_empty
     end
 
-    it 'rejects relation active triple with no reltionship' do
+    it 'rejects relation active triple with no relationship' do
       @obj = ExampleWork2.new
       @obj.attributes = {
         complex_relation_attributes: [
           {
             title: 'test relation',
-            url: 'http://example.com/relation',
-            complex_identifier_attributes: [{
-              identifier: ['123456'],
-              label: 'Local'
-            }]
+            url: 'http://example.com/relation'
           }
         ]
       }