The funds, in some states, are sent to the attorney of the debtor first. So, plan to attempt a garnishment there as well. Each state is different, best hire a local atty that handles "creditor rights"
You can use your existing judgment to garnish money that is to be returned to the debtors although the current practice in Florida is that money is not returned to the debtors in Chapter 13, but instead paid to the creditors as it is paid to the trustee. You would name the Chapter 13 Trustee as a defendant in a garnishment lawsuit. Call the Chapter 13 Trustee to see if garnishment can be expedited.
I agree with my colleagues, the procedures differ from jurisdiction to jurisdiction. Generally, the only time there are funds available upon dismissal is if the case is dismissed before confirmation. In our district, I have never heard of a Trustee refund being garnished, but it makes legal sense that the possibility is there. The Trustee is a 3rd party holding property belonging to the judgment Debtor.
I hope this helps.
Steven A. Leahy
Please note that the above is not intended as legal advice, it is for educational purposes only. No attorney-client relationship is created or is intended to be created hereby. You should contact a local attorney to discuss and to obtain legal advice.