problem with tagged files

[JM Murillo]

This is the situation:

1-The developer "X" has a working copy of the module "M".

2-The developer "X" has modified two files in his working copy (the files
are "f1" and "f2")

3- "X" performs a commit of "f1" and "f2" files to the repository.

4- "X" puts the same tag "T" to the "f1" and "f2" files.

5- The tester "Y" has another working copy of the module "M".

6- "Y" needs to update his working copy with the files with the "T" tag.

7- If  "Y" perform "cvs update -r   T " in the root directory of his working
copy then "f1" and "f2" are updated, but the other files in his working copy
are removed.

8- If   "Y" perform "cvs update -f -r T " in the root directory of his
working copy then "f1" and "f2" are updated, but the other files are
retagged with the "T" tag.

9- Is there any way to update the working copy of "Y" with the "T" tagged
versions of "f1" and "f2" without removing any file and without retagging
any file?

10- I know there is a way to do this updating individually each file "f1"
and "f2" ("cvs update -r T f1 f2") , but "Y" doesn't know which files were
modified.

Thanks.