Follow these steps to enter the XML Data:
1. Open the Raiser's Edge
2. Open the Luminate Online Plugin
3. Click on Gifts and Registrations
4. Move your mouse cursor over Tools on the top of the window
5. While the mouse is hovering over Tool, on your Keyboard, push Ctrl + F8
6. A window will open where you can look at information that has came through and been downloaded out of the Raiser's Edge Luminate Online Plugin

Opening and moving through the XML will not affect your Live Data, so no need to worry about information becoming missing.