diff --git a/lib/geo_combine/migrators/v1_aardvark_migrator.rb b/lib/geo_combine/migrators/v1_aardvark_migrator.rb
index 608b3fb..65b014f 100644
--- a/lib/geo_combine/migrators/v1_aardvark_migrator.rb
+++ b/lib/geo_combine/migrators/v1_aardvark_migrator.rb
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require 'active_support/core_ext'
+
 module GeoCombine
   module Migrators
     # migrates the v1 schema to the aardvark schema
@@ -51,9 +53,9 @@ def convert_single_to_multi_valued_fields
       def convert_non_crosswalked_fields
         # Keys may or may not include whitespace, so we normalize them.
         # Resource class is required so we default to "Other"; resource type is not required.
-        @v2_hash['gbl_resourceClass_s'] = RESOURCE_CLASS_MAP[@v1_hash['dc_type_s']&.gsub(/\s+/, '')] || ['Other']
+        @v2_hash['gbl_resourceClass_sm'] = RESOURCE_CLASS_MAP[@v1_hash['dc_type_s']&.gsub(/\s+/, '')] || ['Other']
         resource_type = RESOURCE_TYPE_MAP[@v1_hash['layer_geom_type_s']&.gsub(/\s+/, '')]
-        @v2_hash['gbl_resourceType_s'] = resource_type unless resource_type.nil?
+        @v2_hash['gbl_resourceType_sm'] = resource_type unless resource_type.nil?
 
         # If the user specified a collection id map, use it to convert the collection names to ids
         is_part_of = @v1_hash['dct_isPartOf_sm']&.map { |name| @collection_id_map[name] }&.compact
diff --git a/spec/fixtures/docs/full_geoblacklight_aardvark.json b/spec/fixtures/docs/full_geoblacklight_aardvark.json
index b0ee9e5..bc3f837 100644
--- a/spec/fixtures/docs/full_geoblacklight_aardvark.json
+++ b/spec/fixtures/docs/full_geoblacklight_aardvark.json
@@ -12,7 +12,7 @@
   "dct_references_s":"{\"http://schema.org/url\":\"http://purl.stanford.edu/cz128vq0535\",\"http://schema.org/downloadUrl\":\"http://stacks.stanford.edu/file/druid:cz128vq0535/data.zip\",\"http://www.loc.gov/mods/v3\":\"http://purl.stanford.edu/cz128vq0535.mods\",\"http://www.isotc211.org/schemas/2005/gmd/\":\"http://opengeometadata.stanford.edu/metadata/edu.stanford.purl/druid:cz128vq0535/iso19139.xml\",\"http://www.w3.org/1999/xhtml\":\"http://opengeometadata.stanford.edu/metadata/edu.stanford.purl/druid:cz128vq0535/default.html\",\"http://www.opengis.net/def/serviceType/ogc/wfs\":\"https://geowebservices.stanford.edu/geoserver/wfs\",\"http://www.opengis.net/def/serviceType/ogc/wms\":\"https://geowebservices.stanford.edu/geoserver/wms\"}",
   "gbl_wxsIdentifier_s":"druid:cz128vq0535",
   "id":"stanford-cz128vq0535",
-  "gbl_resourceType_s": [
+  "gbl_resourceType_sm": [
     "Polygon data"
   ],
   "gbl_mdModified_dt":"2015-01-13T18:46:38Z",
@@ -20,7 +20,7 @@
   "dct_language_sm":[
     "English"
   ],
-  "gbl_resourceClass_s":[
+  "gbl_resourceClass_sm":[
     "Datasets"
   ],
   "dct_publisher_sm":[