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No its not a no no. If you want to get back in with them you will have to pay back what was owed. If you don't want to bank with them again, then you never have to pay it.
They can not sell the debt or add it to your credit report since that would be a violation of the stay.
Yes the debt is wiped out. However, you have the option of willingly paying any debt that was IIB. They are simply requiring that you make them whole before they will do business with you again. If you don't care about banking with them again then don't worry about it.