Just a momentary rant. I have one client in particular that heavily uses inventory and lots. Occasionally they get a batch to hang when posting Sales Order Invoices. This occurred in 4.4 and now in 2013. They call me. I find duplicate keys. Rebuild the files and post the batch. I then get to spend HOURS cleaning up files. Duplicate Inventory Transactions, AR Invoice History, Summary Totals, Warehouse Totals, Cost Totals and other. I would like to just restore them but... They have 15 to 20 people on the system everyday working hard.