IE10 F12 visible source code does not update with changes to actual source code

I am running Windows 7 Professional.  I have a site running with Internet Information Services.  When I make changes to a page on the site, refreshing the page in Internet Explorer 10 will display the changes, but refreshing the F12 debugger will not.

Process:

1. Run site on IIS.
2. Go to a page on the site in Internet Explorer.
3. Modify the page in Visual Studio 2012.
4. Refresh page in Internet Explorer.
5. Open F12.

At this point F12 still shows the old code, and if, for instance, a JavaScript error happens and I try to go to that line, it appears to highlight the characters at the correct index of characters (if the block of text visible was updated), but the characters highlighted are of the old code.

Closing IE and reopening it appears to fix the problem.  Is there a more convenient way?  Windows Update says I'm up to date.