Thanks GPSKid... we have seen those TKs and are about to dig in a see if they'll help.
jazgeek, you are correct about the rules of accounting... unfortunately, sometimes hardware and software doesn't comply. We also work with other accounting software that EASILY lets us enter a one-sided entry... with a warning and a password required.
From time to time, we are confronted with the comment: "Why in the world would you want to enter a one-sided entry?" The answer is that we may not want to, but sometimes we HAVE to... not because of erroneous accounting practices, but because of situations imposed on us by computing hardware and software.
If everyting else is correct, we simply make that one-sided entry, print out the journal listing, notate the reasoning, and move on.