Can you enlighten me where this "Keep Channel Numbers" box was? I don't always catch all the changes in xLights but wanted to know if its in our software.
The DDP packet includes the channel number for the channel in the packet. There are two options for the DDP output:
1) Keep the raw xLights channel number
2) Start the channel number in the packet to "1" for that controller.
Some controllers want #2. For example, the espixelstick code assumes #2 since you don't configure start channels on them. The first channel it receives is what is output to the first light. Minleon's are the same way. Others, like the FPP based controllers and Falcons (I think Hinks as well) prefer #1 as we can configure the start channel for the strings to exactly match what you see in xLights.