Ungroup a node group while keeping parameters? I have created a nodegroup but now I want to ungroup it but when I did I found that all my parameters have gone and I have to put it again,
so is there is any way I can ungroup a nodegroup while keeping the parameters?

some more explination:

what I have here is some node groups in the compositor which have some inputs connected to values which when ungrouping it stay connected but the problem is not in the connected values . the problem is in the value which is not connected to anything like this value 


and when I ungroup the the node group this values return to its default value that I set when I made the node group,notice the image below the red one is the sockets connected which is fine and no problem in that but the values which was 155 become 0.5 which is the default value


so what I need now is to have the value that I set before ungrouping to be the same after ungrouping
I think you can't solve this problem inside the nodeGroup itself, but you can add a value Node (for gray input factor values, RGB/vector for yellow/blue) outside of your group, plug it (from outside) to the factor input of your group and use it for tweaking and the when you ungroup, it'll keep it plugged and the value will be the same as before.

inside group


values lost when ungrouped, default values applied


values linked from outside


values saved and linked after ungrouping


As far as I know, it's not a bug, it's the normal behavior of node groups. Values are stored in the group, not in individual nodes inside the group. So when you ungroup (delete the group) all stored infos are deleted too.