Unfortunately, migrating backup configurations is not possible too, because backups work completely different in Duplicati 2. This makes settings and options incompatible between Duplicati 1 and Duplicati 2.
For example, in Duplicati 2 a full backup is never made after the initial backup has been completed. In V1, you had to specify the frequency of making a full backup, because incremental backups were dependent on the previous backup.
Almost all options have similar compatibility problems.