[label:cms_e]At what timing are the primary and secondary delivery points for SFTP access information switched during file transmission for a large-size resource?

SFTP access information is used when a resource is imported by file transmission after connection with the CMS has been established through the Web.
Either of the primary or secondary delivery points is used for file transmission when accessible, and the delivery points will not be switched.
Note that the selection of either delivery point has nothing to do with access from the application that performed the download.