Hello Russell, The helpfile says: AddResetArchive Clears the archive bit after a successful Zip Add action.It?s not necessary to set AddArchiveOnly too. The above is confusing because one would expect AddResetArchive only adds files with bit set, not cleared whereas it adds all files in the backup set regardless and clears the bits. It should actually do what the helpfile says IMHO Cheers, Alistair+