product attributes in orders

[aaronv]

Hi,

I have migrated virtuemart 1.x to 2.22 with joomla 2.5.11. I also migrated custom product attributes. they are working properly with new orders, but in previous orders custom attributes are not showing, because on both the VM versions structure is different to save attributes in database. Is there any extension available for the purpose. Alternatively you can provide us the steps to accomplish the task.