Can confirm the same. I did pop out the other day to test but was limited on time. Was just in the car and found the Regulator settings and tests within the "front" modules. I also cannot find any control modules for rear doors within ElsaWin. Diagrams have what look like pictures of a module but it's not itemised. At this point I think that the needed settings are gonna be unlabelled bits within the bytes of the fronts. A full beta of VCDS 15.7.3 is gonna be out soon (the one I linked above, before investigating, is the vcds.exe only needed to fix a communication bug with MIB mk2's) and will have updated label files. For the moment tho I am gonna see if I can raise this with RossTech to see if they can advise further.
Definitely there is a rear door module
the part number is 5Q0 959 595
it has been shown on etka