I was recently upgraded to SharePoint 2013.
In SharePoint 2010 Datasheet View, one could scroll through and bulk select 100s of line items in Datasheet view very easily. Navigating the datasheet view was just like navigating through a worksheet in Excel, and one could use quick select keys like ctrl-shift-right arrow / down arrow to bulk select items.
After the upgrade to SharePoint 2013, using the "Quick Edit" tab in Datasheet view and changing the Item Limit to 5000 items, it takes an inordinately long time to load the list. None of the quick select keys like ctrl-shift-right arrow works anymore and the browser keeps warning about a slow-running script when attempting to select multiple items while scrolling through the list.
The functionality I need is for users to be able to bulk delete all line items in a SP list and copy (from Excel) and paste new line items into the SP list through their browser.
