if online or desktop is being used for both years, open the 2024 return to ensure it has the data. if so you'll need to contact support because the data should transfer unless you started 2025 and are now trying to transfer. the transfer must be the first thing done when starting 2025.
if you used online for 2024 and are using 2025 desktop, the .tax2024 must be uploaded to the desktop.
5am-5pm Pacific Time (8-8 Eastern) Monday - Friday
https://support.turbotax.intuit.com/contact
800-446-8848
