The short answer is "no". Akeeba is intended to back up and restore the entire site, not changes to the site.
You can exclude tables from your local backup, such as users, so they won't be available when you do the restore to your live site. But that is a really advanced topic. The users table is linked to data in the core_acl_* tables. If you're trying not to update content, that table links to users, sections, and categories. So you have to be really careful with partial backups and restores.
One alternate technique is to test your changes on your test site and apply them again on your live site. That is a lot more work, but it avoids the partial backups and restores.
Nicholas has been talking about the possibility of incremental backups for version 3.1, but it is too early to know if that capability will help with this situation.
Dale L. Brackin
Support Specialist
English: native
Please keep in mind my timezone and cultural differences when reading my replies. Thank you!
????
My time zone is
EST (UTC -5) (click here to see my current time in Philadelphia, PA)