How do i transfer? I filed using turbo tax CD software I purchased I'd like to transfer the saved file to the online version for use in next year's online turbo tax?

Sorry---when you use desktop software the tax return is saved on your own hard drive.  It is not saved in an online account with returns you prepare using online TT.   But you will be able to transfer 2024 to 2025 whether you use desktop or online next year when you begin a 2025 return.