It is a violation of the Bankruptcy Code for a creditor, including a judgment creditor, whose debt is discharged in bankruptcy, to attach a lien or continue any collection activity against the person who filed bankruptcy pursuant to 11 USC 362 (see here).
See in particular 11 USC 362(a)(4), which provides that it is a violation of the automatic stay for a creditor to commit "any act to create, perfect, or enforce any lien against property of the estate." "Property of the estate" pretty much means all of the debtor's property, such as personal property, real estate, bank accounts, etc.
So, generally, once a debt is discharged in bankruptcy, that creditor can never come after the debtor again.
I hope this helps and a positive feedback is always appreciated if this was useful to you.
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