Batch Render with VFB channels

[sasasaps]

Hello everyone,

I have learnt almost all I know in rendering by reading you people, so big thanks!! I post my question as it seems it has not been addressed previously, I hope I am not doubling a post.

So, I have just discovered the "Batch Render" option. But there does not seem to be an option to save any other VFB channels than alpha. How can I batch render and still get my MatsID, Z-Depht, etc VFB channels output?