Colour balance adjustment not being copied from DNG

I created a DNG file from a very dark image, in order to reduce the noise and give me a cleaner image to make adjustments to.

I then went into the DNG image and made a few adjustments, including the colour balance.

Next, I copied the adjustments from the DNG file and attempted to selectively paste them into the original RAW file.

When the selection dialog opened, there was no checkmark for the colour balance.

If I do the same thing with another RAW file as the source of copied adjustments, the checkmark is there for colour balance

Is this as intended, or have I found something?