I am sorry; I have been trying to download a certain case that may pertain to the fiduciary duty but am unable to access the case for some reason;
Basically if the agreement between the parties provides for assumption of the debt, then the new corporation is liable for the debt. Otherwise, the judgment debtor would need to pursue collections from the corporation.
This can be done in a few different ways:
1. If the corporate veil was pierced, then the directors can be held liable for any amount that is owing. This is most often seen when the corporation is a separate entity in name only and formal requirements are not complied with.
2. many corporations will maintain a bank account so that bills can be paid (ie rent, utilities, taxes, creditors). This can be levied against - more information on that here
3. if the owners sold off the property and retained the assets, that would be a potential fraud issue, along with a possible breach of fiduciary duty;this would also serve as a basis to sue the directors directly. However, the state does maintain a fraud compensation fund for judgment debtors - that information is here - please note there are strict guidelines and requirements to go this route. It is the 2009 CA case Berg v Berg Enterprises that imposes a fiduciary duty on the directors of a corporation - I have been trying to locate a non copyrighted source for you to view but am unable to do so however you can google it and review that case.
I could not find any authority which would allow a small claims court to issue an injunction against the sale of the business until the judgment debt was satisfied, however, that is because only appellate cases are published and serve as precedence, so small claims cases are rarely appealed to that level (due to the fact that a small claim case must be under $10,000 and that does not justify the expense of the appellate process)