Merging trunk from branch ?

[FP]

I have this convention: TRUNK must be always ok, compilable and running, 
only small modifications can be done on it.

Then branches are created when I need to investigate big changes, as I 
did twice in the last month. I use Henrik Nordstrom batch files from 
"squid" project but on windows, to merge from trunk to branches

So yesterday I had two branches B-A and B-B.

In B-A I had just a couple of chenged files.
I merged from TRUNK to B-A and then I COPIED the two files from the 
branch to the trunk sandbox... commit ... et voilà....

In B-B I have several different files changed, in several directories, 
and I'd like to use the merge feature....
I merged from TRUNK to B-B (after the merge with B-A, so it's really 
updated) but can't understand how....

I may use the same scripts from Henrik, just changing tag names and 
issuing them in the trunk sandbox..... correct ?

So I have a Tag_branch_last_merge now pointing to the branch-tag and I 
created a new Tag_branch_top pointing to the branch head.

From the trunk sandbox I should issue a
cvs update -kk -P -j Tag_branch_last_merge -j Tag_branch_top
and "magically" changes should be merged in the trunk sandbox.... 
committing saves them
then I should move the tags.....


Correct ?

Francesco