Also, for smaller jobs, be sure to look at the external copy and external paste commands in the user's guide or online here:

http://www.empirisoft.com/medialab/help/mx_edit.htm

It's awkward but can be done. Note that pasting back and forth is also easier if done from the Details window in the Editor. At some point soon we'll also have a new editor that is much better at this sort of stuff.