unapplied credits

SOLVED

We are a small accounting firm.  During tax season we created a client account to use as a clearing house account.  At some point, some billing time was entered twice then credits were entered and applied.  Now when I run a pre-bill worksheet it's showing a balance due.  The A/R with running balances shows a credit balance and the a/r transaction listing shows unapplied credits.  when I go to Enter a payment, the balance due that shows up on the pre-bill worksheet isn't there, it's showing the credit balance.  

How do I apply those unapplied credits to the open balance?  I've tried from the a/r transaction listing screen, but that doesn't work.

Thanks so much for any help!!

amy