FCPX Exporting Project to Compressor - Optical Flow replaced by Frame Blending

My Final Cut Pro project of a single clip slowed to 50% using Optical Flow rendering is being exported by Compressor using Frame Blending to render the new frames.

The same project exported from Final Cut Pro correctly uses Optical Flow rendering.

Is there some sort of override of this setting inside Compressor?

Setup:

MacBook Pro, 16-inch 2021

Apple M1 Max

32 GB, Ventura 13.0.1

Final Cut Pro v10.6.3

Compressor v4.6.3

Steps:

1. Create a new Final Cut Pro project.
2. Load a clip into the project, select Custom size & frame rate to match the clip (5120x3840, 30p). The clip is a previously Compressor exported file: Uncompressed 10-bit 4:2:2
3. Slow the clip in half: Modify -> Retime -> 50%
4. Set Optical Flow frame interpolation: Modify -> Retime -> Video Quality -> Optical Flow
5. Highlight the Project Name
6. Export the project using FCPX: File -> Share -> Export File (default)
7. Export the same project using Compressor: File -> Send to Compressor -> New Batch; using Uncompressed 10-bit 422. Note that Compressor's frame-by-frame preview window foretells that the video will be using Frame Blending.

The Final Cut Pro exported file correctly uses Optical Flow.

The Compressor output file renders with Frame Blending.