We'll have to put in a Tech support request. I took a look to refresh my memory.
Layers operated automatically once you turned them on. Arm the track to record, it goes right to a new layer. Solo a layer and other layers will mute. Add a layer, delete a layer, rebuild layers-which reorganizes them. I 'd bet take lanes operate the same way. No? Is there an arm to record button, a solo button, a mute button, in the individual take lanes?
On the V700C, shift + the tracks button enables layers on the selected track. Same with Take Lanes?