If I edit a profile - particularly if I change the specification of Includes and/or Excludes, after BIT has created the first, full, backup, how does BIT decide how to change the list of files it will handle in subsequent incremental backups? Surely a restore process will end up creating a restored set of files which differ to the original - won't it ? So, should a change in the profile require another full backup? If so, how many of the existing backup snapshots (full plus incremental) be deleted ?