Issue with Construcing Query String in Admin Area of Form

If I use the re-direct option and the send "Pass Field Data Via Query String Function" I am having an issue when I add a long query string to the form editor.

This works fine:
title={Post Title:1}&description={Post Body:2}

This does not work:
title={Post Title:1}&description={Post Body:2}&author={user:display_name}

In my form editor there is a line break right after "&author="

so when I save the query string it actually looks like this in the form editor:

title={Post Title:1}&description={Post Body:2}&author=
{user:display_name}

And, I get a 404 error during the redirect:

Here is what the good link looks like:

http://theimgweb.com/video-submission?title=the+title&description=the+post

Here is what the bad link looks:

http://theimgweb.com/video-submission?title=the%20title&description=the%20post&author=4dm1n

In the browser their are actually spaces in the spot where there should be the + sign like in the string that works.

Any help on this would be great.

thanks!