diff --git a/tailbone/views/master.py b/tailbone/views/master.py
index 04262124..f9e2d150 100644
--- a/tailbone/views/master.py
+++ b/tailbone/views/master.py
@@ -1841,21 +1841,32 @@ class MasterView(View):
     def fetch_grid_totals(self):
         return {'totals_display': "TODO: totals go here"}
 
-    def oneoff_import(self, importer, host_object=None):
+    def oneoff_import(self, importer, host_object=None, local_object=None):
         """
         Basic helper method, to do a one-off import (or export, depending on
         perspective) of the "current instance" object.  Where the data "goes"
         depends on the importer you provide.
         """
-        if not host_object:
+        if host_object is None and local_object is None:
             host_object = self.get_instance()
 
-        host_data = importer.normalize_host_object(host_object)
-        if not host_data:
-            return
+        if host_object is None:
+            local_data = importer.normalize_local_object(local_object)
+            key = importer.get_key(local_data)
+            host_object = importer.get_single_host_object(key)
+            if not host_object:
+                return
+            host_data = importer.normalize_host_object(host_object)
+            if not host_data:
+                return
+
+        else:
+            host_data = importer.normalize_host_object(host_object)
+            if not host_data:
+                return
+            key = importer.get_key(host_data)
+            local_object = importer.get_local_object(key)
 
-        key = importer.get_key(host_data)
-        local_object = importer.get_local_object(key)
         if local_object:
             if importer.allow_update:
                 local_data = importer.normalize_local_object(local_object)