Sorry, I've been away for a couple of days.
First, let me explain what I want. I want all JPEGS going to my SD card, and all RAWs going to my CF express card. Up until last week, that's what I've always gotten.
Today I ran some very short tests, and I am more confused than ever. My camera is set up the following way:
Primary Slot Function: C/X (CF express)
Secondary Slot: RAW + JPEG
I took test photos in U1, U2, U3 and M. I took 3 photos in each mode, meaning I should have ended up with 12 photos on each card. But I ended up with 9 photos (all JPEGs) on my SD card, and 12 photos -- 3 of them JPEGs, and 9 NEFs -- on my CF card.
So I changed the settings on every mode to:
Primary Slot Function: SD card
Secondary Slot: RAW + JPEG
I now took 1 photo each in U1, U2, U3 and M. Each User setting produced 1 JPEG (on the SD card) and 1 NEF (on the CF card). That's what I want.
But the M setting produced 1 JPEG on each card!
I can't figure this out.