the backup and restore functions do exactly what their name implies and no more. You are not supposed to interupt a first backup so that future incremental backups only happen from new work saved since the last time a backup was performed.

there is no logical reason to change a backup since then you will have different files on pc and sx6, and the whole purpose of the excersise is to save twice for safety.

for updating the hard drive from the pc use the copy function, for renaming, re-ordering, manipulating files and directories, listing contents, writing load lists, etc use all the other functions in the techmanager.