[support] 4.6.4 > 4.6.9 upgrade path

hi all i have had to revert a test site to a 4.6.4 back up version. it has some patches applied so doesn't operate on our main drupal install. i obviously want to get this up to 4.6.9 asap. is it ok to go 4.6.4 > 4.6.9 or do i have to go 4.6.4>.5>.6>.7>.8>.9? i am familiar with the untar, do diffs etc malarkey, just want to know if i can get away with doing it once rather than five times. pault -- pault [at] burngreave [dot] net