A family of Microsoft word processing software products for creating web, email, and print documents.
Like many others I find 2013 frustrating in this regard, whether or not it has changed (I think it has too!).
A workaround is available in a shareware macro here:
http://www.gmayor.com/Associate_Printer.htm
You put the template in your Word startup folder and it adds a macro that allows you to associate docs with printers.
It works fine for me. You lose the printing options of the usual dialog box, but I find it useful for printing labels to my little label printer, as it prevents me printing them on my A4 printer or, worse, printing loads of useless labels when I just wanted a letter!