This solution resolved the issue:
canceled the current rebase
After clearing the rebase, issued the following commands against
the branch type:
cleartool checkvob -hlink -f brtype:<stream name>@\***pvob
cleartool checkvob -hlink -f brtype:<stream name>@\childvob
cleartool checkvob -global -acquire -f brtype:<stream name>@\***pvob
This repaired issues with the branch type.
After performing this step, issued "cleartool chstream -generate" or sycn the stream with the project from the GUI.