When you initially load Inzant, your iPad will automatically download your Company's default set amount of History. History will be kept on the iPad going forward however if you want to look back further you can force the iPad to get all history for a retailer. This includes Call History, Order History and Task History. 

The iPad will begin to Sync aged Data.

Now the entire Call, Order and Task History record available for that Retailer will now be available to view in the History tabs.