Hi spring-statement,

Thanks for the file

Please have a look at the FBX file below.

I have selected one Cloner and then Object manager> Object> "Bake as Alembic". Then the other one.
Both selected with all child objects are then exported via FXB exporter while the selected option is checked.

Here is my result
https://projectfiles.maxon.net/Cineversity_Forum_Support/2025_PROJECTS_DRS/20250328_CV4_2025_drs_25_EXfx_01.fbx.zip

Is that working for you?

All the best