CHECKOUT VCR with Label: header and DAV:auto-update

Hello,

it is not specified (neither 8.8 nor 9.3) that checking-out a VCR with
Label: header is similar to checking-out a VCR with the DAV:apply-to-version
flag with respect to setting the DAV:auto-update property in the resulting
WR.

It it just missing or is there any reason for not being similar?

Thanks,
Peter