Please help with setting to export transparent green screen from After Effects

[Disney Up, Boiler Up!]

I have used keylight to remove a green screen from a clip. The only thing I used beside the keylight, was a simple drawn mask to cut off the sides of the wall behind the green screen. I need to export it with a transparent background, so I can import it into Premier with a transparent backgroud. I've watched several videos, and have read in this Adobe community what the proper setting should be. They all pretty much say the same thing. I have rendered it out 4 times now, and it still had a black background when I import into Premier. Using screen opacity it Premier didn't help, I tried. These are the most current setting I used. I have also tried changing the format options to a couple of different things, nothing is helping. I'm sure I'm just not doing something right. Please help?

I'm using the most up to date version of AE as of 1-30-2022

thanks

[Disney Up, Boiler Up!]

Just a note: I have used Losless with Alpha preset, Quick time, and AVI.

[kaihin30]

Umm not sure if this is the reason but maybe you could try "ProRes 4444" instead of "ProRes Animation" (Under the Fomate Options), 4444 is a more well-developed format with an alpha channel.

Or you can try exporting it with Media Encoder. Menu bar > "File" > "Export" > "Add to Adobe Media Encoder Queue...".

Feels like its more of a problem with export rather than comp setting.