Update with two -j opions or merging selected changes

[Michael Farthing]

Hello,

I have used and administered cvs for quite a while and thought I
understood most aspects of cvs pretty well, but have a scenario I don't
understand.

I am trying to merge selected changes onto a branch.  In effect I have a
release branch, into which I need to merge a bugfix which was performed
on the main line.  (To extract the essence of the problem I am having, I
will describe this in terms of revisions and a single file, although in
reality I need to work with tags and multiple files.)

I have a branch in a file (called afile).  This branch is 1.13.2 and I
have a revision on the branch 1.13.2.1.  This is what I have checked
out.  Changes have been made on the trunk: 1.14, 1.15, 1.16

So, I currently have:
  |
1.13---(1.13.2)
  |        |
1.14    1.13.2.1
  |
1.15
  |
1.16

Now, I want the changes made between 1.15 and 1.16 merged into my
working copy (which is currently 1.13.2.1).  I try using the command:
cvs up -j1.15 -j1.16 afile

What I get are the 1.13.2.1 with all of the changes between 1.13 and
1.16, when I only want those between 1.15 and 1.16

(I have tried this with both V1.11.17 and V1.11.22.)

Any assistance would be much appreciated.

Regards,
Michael Farthing