update field import services in line with import services to use upload id rather than upload method as the source of truth for how a log was created

app/services/imports/lettings_logs_field_import_service.rb

@@ -43,12 +43,11 @@ module Imports
       log = LettingsLog.find_by(old_id:)
 
       if log
-        upload_method = meta_field_value(xml_doc, "upload-method")
+        upload_id = meta_field_value(xml_doc, "upload-id")
 
-        case upload_method
+        if upload_id.nil?
-        when "Manual Entry"
           @logger.info "lettings log with old id #{old_id} entered manually, no need for update"
-        when "Bulk Upload"
+        else
           if log.creation_method_bulk_upload?
             @logger.info "lettings log #{log.id} creation method already set to bulk upload, no need for update"
           else

app/services/imports/logs_import_service.rb

@@ -25,11 +25,6 @@ module Imports
       end
     end
 
-    CREATION_METHODS = {
-      "Bulk Upload" => "bulk upload",
-      "Manual Entry" => "single log",
-    }.freeze
-
     def creation_method(xml_doc)
       upload_id = meta_field_value(xml_doc, "upload-id")
       upload_id.present? ? "bulk upload" : "single log"

app/services/imports/sales_logs_field_import_service.rb

@@ -16,12 +16,11 @@ module Imports
       log = SalesLog.find_by(old_id:)
 
       if log
-        upload_method = meta_field_value(xml_doc, "upload-method")
+        upload_id = meta_field_value(xml_doc, "upload-id")
 
-        case upload_method
+        if upload_id.nil?
-        when "Manual Entry"
           @logger.info "sales log with old id #{old_id} entered manually, no need for update"
-        when "Bulk Upload"
+        else
           if log.creation_method_bulk_upload?
             @logger.info "sales log #{log.id} creation method already set to bulk upload, no need for update"
           else

spec/fixtures/imports/logs/166fc004-392e-47a8-acb8-1c018734882b.xml

@@ -9,7 +9,8 @@
     <meta:modified-date>2022-04-12T14:10:59.953121Z</meta:modified-date>
     <meta:status>submitted-valid</meta:status>
     <meta:reporting-year>2021</meta:reporting-year>
-    <meta:upload-method>Manual Entry</meta:upload-method>
+    <meta:upload-method>Bulk Upload</meta:upload-method>
+    <meta:upload-id>8dda8f1a-f5a1-4827-8d82-dd7fd9258eab</meta:upload-id>
     <meta:schema assert-valid="true"/>
     <meta:rules assert-valid="true"/>
   </meta:metadata>