How to save 32 bit EXR image with single channel?

I have a single channel 32 bit EXR image that is created in OpenCV. I am able to successfully load it in Fusion and do some edits to it. However, it seems that there is only an option to save it as a 3 channel 32 bit EXR image instead of a single channel 32 bit EXR image. This behavior is verified when I read the image back in OpenCV. Could someone let me know what I am missing?

i think you dont miss anything, its currently not possible to save a single channel EXR

Hey Michael, thanks for the clarification. I am still fairly new to the Fusion community, could you let me know where I can submit a feature request?

you can open a thread here or search first for one because i know that others ask also for single channel images.
then you could write an email to BMD

and there is a "wishlist" over at steakunderwater (another fusion forum)

If you uncheck the RGB checkboxes in the Saver, does it not save out just the alpha channel? Does for me.

Hey Chad, I was able to uncheck the RGB checkboxes and save it as single channel. Thanks a lot for your help!