I noticed this myself then checked code for Bot::SaveBotGroup and noticed botGroupId always returns 0 then the script exits, so it never gets to the part where it saves the groupmembers.
To fix this bug replace: (in latest source as of 1/24/15)
Code:
if(botGroupId == 0)
return;
with this:
Code:
botGroupId = GetBotGroupIdByBotGroupName(botGroupName.c_str(), errorMessage);
if(botGroupId == 0)
return;
In bot.cpp>Bot::SaveBotGroup
Now it will properly check the groupid, then save the members, tested and it works.