Hi
Configuration is not passed during consecutive starts via the interface list, or if you start from the main-screen. But they are shared if you "restart" the capture.
Currently I am in the process of writing the limitations down, to further down the road write a wiki-page containing all limitations. One more limitation is, that boolflags have to be at the end of the configuration list atm, if you intend to run a Python based extcap driver. Otherwise (as demonstrated by the example), the flag is passed with an extra space, which seems to crash the demo application for some reason.
Also, "coming back" was not part of my original intention, but I agree, that some form of handling that should be implemented.
regards
Roland