Dante will receive whatever you patch to it in the I/O Port tab. If you patch input sockets (as I think is default) then it will receive the signal immediately after that sockets A-D converter, regardless of any routing or patching you have going on later in the console.
If you want it to receive the signal from a particular channel regardless of which socket is soft-patched to that channel then you can use the “Input direct out” option. If you choose this, make sure to set up the type of direct outs you want by selecting any channel, pressing “processing” then going to the “routing” and “direct out” tabs. You can offset levels, choose pick-off points and decide whether you want them to follow the faders and mutes. The level offset is per channel, the other settings are global.
You can also patch any of your mixes to the card slot, look through the menu options.
Chris