At least some of the newer Legacy units that are intended for the trailing position have a reverse switch. This is to allow folks who run conventionally to set the trailing 'A' unit to their liking. No command mode necessary.
Since these Conrail E8's appear to have been released in 2017 or before, based on the info on Lionel's website, Road No. 4022 (6-84084) may or may not have one. Tom, does your #4022 have one?
M.H.M.