Is there a log that lists only changed files that have been backed up

Hi,

Any thoughts on this and how would we find out what files have been changed?

Some Solaris client hosts that use the old file system structure (UFS)  need to become ZFS. We plan on restoring the files into the new host. We thought that an initial restore could be done first then during the actual change over to minimize the downtime only files that changed would be restored.

Thanks