diff --git a/app/convert.py b/app/convert.py
index 1fbc5b8..23b18eb 100644
--- a/app/convert.py
+++ b/app/convert.py
@@ -24,7 +24,8 @@ def fix_url(link):
 
 
 # Create linked objects
-def add_linked(person, field, obj, data):
+def add_linked(person, obj, data):
+    field = []
     # TODO: fuzzy matching instead of lower()
     items = fix_bracketed_lists(data).lower()
     items = items.replace(';', ',').split(',')
@@ -38,6 +39,7 @@ def add_linked(person, field, obj, data):
             tgt.name = n
         tgt.save()
         field.append(tgt)
+    return  field
 
 
 # Fetch an object by source_id (numeric identifier used in source DB)
@@ -116,10 +118,14 @@ def refresh_data(filename, fmt=None):
                     person.personal_url = fix_url(row['URL'])
 
                     with transaction.atomic():
-                        add_linked(person, person.research_methods, Method, row['Methods'])
-                        add_linked(person, person.research_scales, Scale, row['Scale'])
-                        add_linked(person, person.research_taxa, Taxon, row['Taxa'])
-                        add_linked(person, person.research_fields, Field, row['Field of expertise'])
+                        research_methods = add_linked(person, Method, row['Methods'])
+                        person.research_methods = research_methods
+                        research_scales = add_linked(person, Scale, row['Scale'])
+                        person.research_scales = research_scales
+                        research_taxa = add_linked(person, Taxon, row['Taxa'])
+                        person.research_taxa = research_taxa
+                        research_fields = add_linked(person, Field, row['Field of expertise'])
+                        person.research_fields = research_fields
 
                     person.index()
                     person.save()
@@ -150,6 +156,7 @@ def refresh_data(filename, fmt=None):
                     ppl, source_id = get_by_id(row['Person'], Person, first=False)
                     if not ppl or not ppl.first(): continue
                     for person in ppl:
+                        person.resources = []
                         for r in rzs:
                             person.resources.append(r)
                         person.save()
@@ -162,6 +169,7 @@ def refresh_data(filename, fmt=None):
                     ppl, source_id = get_by_id(row['Person'], Person, first=False)
                     if not ppl or not ppl.first(): continue
                     for person in ppl:
+                        person.ranges = []
                         for r in rzs:
                             person.ranges.append(r)
                         person.save()