This is quite an annoying issue. I've created several Search Folders in Vault, which contain pretty complex search-parameters. Every time we migrate to a newer version of Vault (almost every year) I have to manually 'redesign' these search criteria... FOR EACH WORKSTATION THAT USES VAULT in our company!
It would be a great improvement of Vault Basic to incorporate a tool/function to export/backup AND import the search folders. Can't imagine other users don't think the same.