Updating an installed RHEL6 system using DVD ISOs and yum throws dependency errors and aborts, why?

Issue

With a system installed with Red Hat Enterprise Linux 6.2 or earlier and attempting to update it to Red Hat Enterprise Linux 6.4 or later by way of loop-mounting the DVD ISO and using yum to perform the update - it fails if for example matahari or systemtap-grapher is installed on the system with errors such as these:

Error: Package: matahari-network-0.4.4-11.el6.x86_64 (@anaconda-RedHatEnterpriseLinux-201111171049.x86_64/6.2)
           Requires: libqpidcommon.so.5()(64bit)
           Removing: qpid-cpp-client-0.12-6.el6.x86_64 (@anaconda-RedHatEnterpriseLinux-201111171049.x86_64/6.2)
               libqpidcommon.so.5()(64bit)
           Updated By: qpid-cpp-client-0.14-22.el6_3.x86_64 (rhel-source)
               Not found
Error: Package: systemtap-grapher-1.6-4.el6.x86_64 (@anaconda-RedHatEnterpriseLinux-201111171049.x86_64/6.2)
           Requires: systemtap-runtime = 1.6-4.el6
           Removing: systemtap-runtime-1.6-4.el6.x86_64 (@anaconda-RedHatEnterpriseLinux-201111171049.x86_64/6.2)
               systemtap-runtime = 1.6-4.el6
           Updated By: systemtap-runtime-2.3-3.el6.x86_64 (rhel-source)
               systemtap-runtime = 2.3-3.el6