Im a contractor who has not been paid; original lien amount for work completed not paid. Issued a work-stoppage letter from client lessee of NY space; have additional amounts of work not paid pre-stoppage letter and post-stoppage letter (demobilization, storage). Want to amend lien for entire amount, but concerned will lose priority of filing. Do I file a new lien with just the increased amount in order to preserve filing date of priority for original lien? Can I amend the original lien to increase the amount so as not to lose the filing date? Can interest be added to the amounts unpaid as part of lien amount? Thank you