Set the scheme as available from previous year if the collection is in crossover

app/models/scheme.rb

@@ -219,8 +219,12 @@ class Scheme < ApplicationRecord
   end
 
   def available_from
+    if FormHandler.instance.in_crossover_period?(now: created_at)
+      FormHandler.instance.collection_start_date(created_at) - 1.year
+    else
       FormHandler.instance.collection_start_date(created_at)
     end
+  end
 
   def open_deactivation
     scheme_deactivation_periods.deactivations_without_reactivation.first