Switching from "Inline" routing to bus routing means that MIR Pro's wet signal (of this channel only) will be available separately, on any other bus you assign there. The readily panned direct signal component will remain on this channel.
Neither the relative level of the direct ("Dry") signal nor the room ("Wet") signal's level will change as long as you leave the bus you send the wet signal to @ 0dB.
This feature is meant to be used for stem exports and sub-grouping, actually, but it can be used for processing stunts with MIRacle, too, of course. ;-D
Kind regards,