Hello Edward
Many thanks for the response, and please see my responses below.
You say you tried deleting the UDK, what happened when you did? This appears to work as expected. After deletion, the UDK3 display in the fader window is empty apart from the "3"..
When you tap RECORD, does the UDK flash? Yes, if it's empty (e.g. just deleted).
If you tap RECORD and then tap the UDK what happens? Set fader 5 (house lights) to 100% then tap record followed by the key for UDK3. UDK3 display in the faders window now shows "3 Fixture [5] House" and not the "3 Channel Data", etc. that I was expecting. Pressing UDK3 doesn't bring up the house lights and the only apparent change is the <[5] House> which appears in the command bar, as shown in the attached image.
So I'm guessing that UDK3 is saving "fixture" data (?) and not channel data and I've tried to find a setting elsewhere that might affect this, but without success.
Regards
Phil