diff -urN multistep.orig/multistep.module multistep/multistep.module
--- multistep.orig/multistep.module	2010-06-19 09:17:52.000000000 -0400
+++ multistep/multistep.module	2010-06-21 11:05:06.000000000 -0400
@@ -743,11 +743,11 @@
   $step = 1;
   // Verify whether there is a step associated with the field first.
   $field = content_fields($field_name, $type);
-  if (isset($field['widget']['multistep'])) {
+  $group = _fieldgroup_field_get_group($type, $field_name);
+  if (isset($field['widget']['multistep']) && !$group) {
     $step = $field['widget']['multistep'];
   }
   else {
-    $group = _fieldgroup_field_get_group($type, $field_name);
     $groups = fieldgroup_groups($type);
     // Verify whether it's a multigroup or a mult-valued field
     if ($groups[$field_name]['settings']['multistep']['step']) {