Sync Issue

Occasionally the sync software duplicates a file and appends it with a date/time stamp. Such as: 04082017-2017-03-29_15-21-25-490. What reason is there for doing that? It did it with a bunch of my music files as well (sometimes 3 or 4 duplicates). It does not seem to be necessary.

Thanks.

W. Hill

https://support.wdc.com/knowledgebase/answer.aspx?ID=15110