We were contracted by the future owners of a sandwich shop to fit-up retail space they planned to lease. Nothing in the contract listed the landlords company name, nor were they ever invoiced for any work. The project went very well and we were paid in full and ultimately our subs were paid in full. My client has received a lien release. But since our clients are to be reimbursed for the restroom construction, the landlord wants a lien release. I don't feel obligated to provide one. It seems like I'd be falsifying a legal document since I never was contracted by them. Am I wrong?