My stored session bookmark got deleted when I deleted a session bookmark on duplicated session, below are the steps:
1> Currently logged on to "ABC" stored session (Have 3 session bookmarks: /a123/,/b123, /c123)
2> clicked on "Duplicate session" button (using one of Session buttons)
3> Then saved the duplicated session (Session--> Save Session) with different name,saved as "XYZ" (seleced Save password option).
4> Now deleted one session bookmark on "XYZ" stored session (deleted /b123).
5> Checking at "ABC" stored session the one session bookmark got deleted, which I had deleted on "XYZ" stored session(now I see only 2 session bookmarks: /a123 and /c123).
I'm using 4.2.3 (Build 494) with "Commander" interface on Windows XP SP3. This happenes for any stored session.