It's an old Dbdump.

A DBDUMP is not a secure backup!!!! I have seen many dumps fail to load, it is not a fail safe backup.
Use proper backup routines like MS SQL backup - it is much faster anyway.

When doing a database dump from within the administrative services, if the user does not check, it just picks the first database in the list so if they haven't looked, they've probably dumped an old database that's why it has only 2016 data

I can't agree more!

A successful DB Dump DOES NOT IMPLY THE DB Load will be successful.

Using that for database backup will likely mean a restore will not be with last nights data, but something a month or further back. Many issues that will cause a DB Load to fail do not appear right away.

It is very, very dangerous!!! Not to mention a huge risk or liability for you!