Merging branches in PowerBuilder IDE is impossible

There is a useful documents about the usage of development branches in your
site. We use PowerBuilder as IDE and the merge of 2 development branches is
a mess there. After I checked out all elements in the head branch, I use
the "get latest version" of the root project target element (IDE does not
allow me to use the parent workspace element), I do select all elements,
then among the advanced options, I use the "update options"/merge with the
tag name of the bug branch.
The main problem is that the update (merge) really runs just on the
selected elements, if there are new elements in the bug branch, those
elements are not inserted into the head branch during the merge. Similarily
the erased (from cvs) elements (in bug branch) are not removed in the head
branch. To be frankly I do not know how it could be done. Perhaps if all
elements are selected in the list, not the objects must be updated one by
one, but their first common parent directory. Or is this idea against the
possibility of the PowerBuilder IDE?
The other problem is that with CVSSCC 2.0.x I could use the conflict
resolver during merge, the problematical objects really automatically
invoked it. Nowadays it does not work at all. Please take a look at the
attached test scenario I made.
Due to the mentions problems I have to run the complete merge process
outside the PowerBuilder IDE (in WinCVS). Do you think it can be done ever
in PowerBuilder IDE?