A Florida couple (Tiffany Score and Steven Mills) learned their daughter was not genetically theirs due to an IVF embryo mix-up at a fertility clinic, but have now reached a custody agreement with the child's biological parents allowing them to remain her permanent legal parents. The agreement, confirmed in court documents, resolves what became a high-profile case about parental rights and family law after the initial discovery of the mix-up. The couple still has one remaining embryo at the clinic, though they're uncertain whether it's genetically theirs.