1. Order on Hold problem:
I have one order. In Sales -> Orders, click on order to view it.
Press Hold. Appear a blank page (/magento1/index.php/admin/sales_order/view/order_id/1/).
Press Back in order to get the last page in browser.
If you click on the same order you will get the same blank page.
To solve this temporary:
Go to System -> Cache Control -> check Refress All Cache -> Save cache settings
Go back in Sales -> Orders -> click on order and the page (/magento1/index.php/admin/sales_order/view/order_id/1/) is shown.
2. When reordering an order, the new order form “forget” the State/Province field value of the client. It is also possible to remember this value?
3. Please let me know if is possible to change manually the status of the order to Processing, not automatically.