A bit of confusion here.
Do you mean saving from Surveyor (saving an actual session) or saving from Driver (a "Driver Game" or "Session Game")?
I just compared these two possibilities in the current beta Trainz Plus (136192) and the current retail Trainz Plus (132284) and could find no difference.
When saving a "Driver Game" from Driver that is the exact order that it still uses - the Clock Time, Date and Session runtime. If this was different in any previous beta (and I never checked to notice) then it has been returned to "normal".
When saving a New Session (not overwriting the existing one, if any) then the same order applies - Clock Time, Date and Session runtime (session runtime will normally be 00:00 when saving a session). Again, if this was different in any previous beta then it has been returned to "normal".
Addendum: Just to clarify something "Clock Time" is the computer clock time, as you mentioned, not the Trainz game clock time.