Making 'stages' in FEFLOW

Hello,

Simple question here:

I'm modeling the inflow into a tunnel construction. The model is simple, only water flow under saturated, steady-state conditions.

Is there a way in FEFLOW to model 2 (two) cases, inside the same file?. The first case would be the region considered without tunnels and the second, with tunnels excavated (by de-activating elements of the tunnels and setting 'seepage-face' BC).

Is is possible (how if so), or I'm forced to do two cases in separated files?

Thanks so much in advance. :)

There's no way in FEFLOW to do this. For FEFLOW one file is one case.

Thank you Peter!

Kind regards. ;)