License agreements, model releases, work for hire contracts are all business agreements that you may have either with the model directly or with a studio to prove right of use.
2257 documents are record compliance documents needed to abide by federal laws.
They each define separate legalities. Having one doesn't mean you have compliance with the other. Over the years I have seen multiple contracts that incorporate the two together, when in fact they should be separate documents and should be maintained that way.
If all you have are 2257 docs then, in GFY terms, you're shit out of luck.
Disclaimer: I am not a lawyer so use at your own risk.
