Question Is this the normal dropbox backup behavior?

[FurmigaHumana]

Im using plesk's dropbox backup extention v4.0.1-19 but i noticed all backup files uses the same name thus overriding already uploaded ones on dropbox, i know i kind of still have access to them with dropbox's file history but that makes everything so much more complicated specialy with multi-volume backups that I would need to figure out the sequence by the upload date hoping they are all uploaded on the right sequence, is this a bug or its working as intended?