binds and overwriting infinite-depth copies

Consider the following case.  There exist the following URLs and the
resource's they are bound to:

/a/c/p - R1
/a/d/p - R2
/b/c/p - R3
/b/d/p - R3

/b/c and /b/d are different collections.

What should happen if I do a COPY /a /b  with overwrite set to true?
Should the new /b/c/p and /b/d/p still be the same resource?  Keep in
mind that R3 may be a VCR.

Thanks for the help,
Tim