If I'm not mistaken, Micrografx Draw6 was a windows 3.1 application, if not, an early windows 95 application. Had much the same problem with an early edition of Sierra's Print Artist.
Keep your current printer/driver for all your other windows applications, and make it the default printer.
Download the Windows 3.1 drivers for the HP Printer, and install a new printer and call it Micrographx. When the pop-up dialog comes up to print, select the printer called micrographx.
What you'll wind up with basically is two printers, both HP820cse, but 1 with win95/98 drivers, and 1 with win3.1 drivers. The older drivers will still work, and work well under 95/98, especially when being driven by software that is still windows 3.1 compliant.
It's only a workaround, but as software and hardware companies drop support for Windows 3.1, older programs lose their compatability, necessitating some workarounds.
Hope this helps.