New HTML editor stripping out my code

So I have a snippet of HTML code using some old school code (background image) and it's being stripped out in the new editor.

The original code is:

<td background="go.rocketlawyer.com/rs/rocketlawyerinc/images/carrot_600_ffffff.png" class="carrot" style="background-repeat: no-repeat; background-position: left bottom;" width="600" height="26" valign="top" bgcolor="#F2F2F2">

But when I paste it in the new editor, the "background" code gets stripped out:

<td class="carrot" style="background-repeat: no-repeat; background-position: left bottom;" valign="top" bgcolor="#F2F2F2" width="600" height="26">

I know I can add in background image as an "inline style", but that would force me to fix A LOT of snippets.

Can you have it NOT strip out my old code?