Transparent background in 2024 now black in 2025

[Steve352349336b5s]

Hi everyone,

I recently updated to 2025.  In 2024 I had a composition with a bunch of layers of Apple Pro Res 4444 with alpha which had all transparent background.  I open the same composition in AE 2025 and now all the transparent backgrounds are black backgrounds for every single layer.  Things I've tried:

- toggle preserve underlying transparency

- change blending mode (tried every option)

I'm certain the videos have alpha channel, when I import into Filmora, the backgrounds are transparent, and again it used to work in AE 2024 with the same footage.  

Any ideas?  Thanks in advance!

[nishu_kush]

Try toggling the Transparency Grid. You can do that by clicking the checkerboard icon in the Composition panel. Check out the screenshot. Let us know if this is not what you're looking for.

Thanks,
Nishu

[Steve352349336b5s]

Thanks Nishu, that just changes the composition background from black to transparent.  I need to change each video layer from black background to transparent.

[Steve352349336b5s]

This is driving me crazy.  I put so much work into this project and now I can't finish it with AE 2025.  The two screenshots show what's happening.  Again these are Apple Pro Res 4444 with straight alpha.  I import the same files into Filmora and the transparency is maintained.  Same footage in same project used to maintain transparency in AE 2024.  If anyone has any idea I would hugely appreciate it!

There doesn't seem to be a way to downgrade to 2024 through Creative Cloud either...