It would be nice if the WinSCP plug-in could import sessions from an existing winscp.ini, even if the plug-in stores them in the registry. This would eliminate the need to enter the sessions into WinSCP and then enter them again into the plug-in.
I'll consider that. Meanwhile you can use WinSCP to import the sessions from an INI file. Or do not use INI file at all. The session will be shared between the application and plugin then.