Fix income copy keys

app/models/form/sales/pages/buyer1_income.rb

@@ -2,7 +2,7 @@ class Form::Sales::Pages::Buyer1Income < ::Form::Page
   def initialize(id, hsh, subsection)
     super
     @id = "buyer_1_income"
-    @copy_key = "sales.income_benefits_and_savings.buyer1_income"
+    @copy_key = "sales.income_benefits_and_savings.buyer_1_income"
   end
 
   def questions

app/models/form/sales/questions/buyer1_income.rb

@@ -2,6 +2,7 @@ class Form::Sales::Questions::Buyer1Income < ::Form::Question
   def initialize(id, hsh, page)
     super
     @id = "income1"
+    @copy_key = "sales.income_benefits_and_savings.buyer_1_income.income1"
     @type = "numeric"
     @min = 0
     @max = 999_999

app/models/form/sales/questions/buyer1_income_known.rb

@@ -2,7 +2,7 @@ class Form::Sales::Questions::Buyer1IncomeKnown < ::Form::Question
   def initialize(id, hsh, page)
     super
     @id = "income1nk"
-    @copy_key = "sales.income_benefits_and_savings.income1nk"
+    @copy_key = "sales.income_benefits_and_savings.buyer_1_income.income1nk"
     @type = "radio"
     @answer_options = ANSWER_OPTIONS
     @conditional_for = {