Now, by default, there should be 75 stories displayed per screen (in your story list) and there may be multiple screens of stories if there are more than 75. So if you want to drag and drop story number 76 it will be on screen 2 (stories 76-150) so you cannot drag and drop it up normally. In other words you cannot drag and drop stories between screens in your story list.

The way you get around this is to find a story on the first screen (1-75) that has the same category as the one you wish to move up. 

1. Click on the category name/hyperlink in the category column next to the story. 
2. Now the screen will display 75 of the top stories containing that category. 
3. Hopefully the story you wish to move is on the first screen. 
4. If it is, move it to the top of the page or near the date range where you want it (look at the right hand column).

Now click "All" at the top of the story list to display all stories and your moved story should now be on the first screen.