TNF Solitude, you will have to decide to remove regulator on Q2000 or leave it intact, then you will have to break propane line on regulated side or unregulated side and insert tee and then ad line to BBQ.
If using the spare tank (which, to my knowledge, is not regulated), there is no need to mess with the regulator on the Q. Our Solitude has the older style system which has three 20lb bottles (2 in the left compartment for the main supply to the trailer and a spare on the right side) vs the newer version of two 30lb bottles. I can't speak to the type of setup the Reflection has. Maybe it's different than the Solitude.