Civil 3D corridor export feature lines tip : Baseline Profile layer locked

I have used Corridor feature lines export to Polylines, Alignments with profiles and Profiles lots of times.
But this time nothing worked right. All elevations were not absolute but relative to baseline profile not matter what trick i tried.
Finally i found out that if profile baseline layer is locked then all elevations exported, no matter what method used, are relative to this profile, not absolute!

Not as single mention in C3D help. Not a single relative result in Google Search. Am i the first one to fall into this situation ? I do not think so.
Should autodesk warn users about this behaviour ?

Thanks God, i found that just one step before losing my mind and only after several hours stall!
So the damage is done. Other partners, that do not know anything about C3D, think that i am too slow and that simple projects are difficult for me. Yeah...if you say so...

&*&^%%$%#@$!*@&^

Leica vs Trimble software support

Trimble has published its Civil 3D 2017 export/import set of applications since the first days autodesk announced it.
September ends and Leica has not published its X-Change sets of applications although there are already Infrastructure and Building Links for 2017 editions months ago.