What happens in case of unexpected power interruption under backup?

[haus]

There is some good information in this thread:

How does Duplicati Resume After Interruption?

How does Duplicati handle interruptions, for example if a system gets powered down or rebooted during a backup? Does it re-start from where it left off or does it resume the full backup again? Also, are there residual “breadcrumbs” that need to be cleaned up after an interruption or will Duplicati handle this itself? Does --auto-cleanup handle all this or is there something else I need to do?