Typically, the creation of a new Last Will and Testament causes any prior existing Will(s) to be rendered null and void.
But if the new Will was not provided to the Probate Court to settle the estate immediately after the passing of the maker, there are options.
If the first Will has already been probated, the beneficiaries under the second Will may be permitted to challenge that probate process.
But an experienced attorney should be consulted about the specific rights and obligations of all involved, as such litigation can be complex. You can find a local attorney for FREE at Standard Legal’s Attorney Find page.