by Davo Smith.
If you take a look at the print_login function in 'filepicker.js', then scroll down to the section starting:
} else if(l[k].type=='select') {
You will find that the options are set up with their value + content, but that there is currently no support for setting the 'selected' element (unless I've missed it, in which case my apologies to Marina who wrote that bit of code).
I think this looks like an improvement that should be posted in tracker.moodle.org (assuming it isn't there already - please search first).