diff --git a/lib/sf/reg_item.rb b/lib/sf/reg_item.rb
index 9760ab7..40d4b0b 100644
--- a/lib/sf/reg_item.rb
+++ b/lib/sf/reg_item.rb
@@ -17,7 +17,9 @@ def respond_to_missing?(method_name, include_private = false)
   def create_from_reg_item_for(sf_reg_id)
     attrs = {}
     self.reg_item_mapping.each do |reg_item_attr, sf_reg_item_attr|
-      attrs[sf_reg_item_attr] = self.reg_item.send(reg_item_attr)
+      reg_item_value = self.reg_item.send(reg_item_attr)
+      reg_item_value = reg_item_value.iso8601 if reg_item_value.eql?(ActiveSupport::TimeWithZone)
+      attrs[sf_reg_item_attr] = reg_item_value unless reg_item_value.nil?
     end
     attrs['reg_registration_id__c'] = sf_reg_id
     Sf.client.create!("RegItem__c", attrs)
diff --git a/lib/sf/version.rb b/lib/sf/version.rb
index c9b0267..50f684a 100644
--- a/lib/sf/version.rb
+++ b/lib/sf/version.rb
@@ -1,3 +1,3 @@
 module Sf
-  VERSION = "0.1.35"
+  VERSION = "0.1.36"
 end