HOA dues for Ist mortage closing

[Sam Ven]

I have been reading that if the 1st mortgage is being closed upon, than all liens that are filed (other than state/ira/utiliy liens) are wiped out. Does it mean, even mechanical liens doesn't hold? What about the HOA dues where the HOA hasn't filed the lien yet. Can they put lien after the property is purchased in foreclosure for the dues owed by previous owner?