Good question Bev - I am afraid that I cannot help you but I look forward to some answers. Sarah.

Would also like to know, hope someone will have the answer. Thanks for asking

I have heard of having it cloned.

I wish I knew the answer!

This is an answer I would like to know./Lillian

If you are selecting and copying folders manually (without an automatic backup program) I would just change the name of the folder -put an "A_to" for "added to" and then know which ones to copy over.
When you've done that, go back and remove that from the end of the names. Might take a minute here and there, but would let you know which ones at a glance.
Jo

Thank you for asking Bev, and thank you Jo for your reply.

Curious Hugs, Bonnie

You need to set up a custom backup and one of the options is to replace all the files, the other is to only add new files created since the last backup.
Usually this is done as a Sheduled backup and it requires you to set up a password for it to run correctly.
You can set it up from Accessories\SystemTools\SheduledTasks
Alternatively you can set up Back-up from Accessories\SytemsTools\Backups
Either procedure will allow you to choose "Advanced Options" and you will find the choice of HOW you want the backup to be made in AdvancedOptions.
Please see the photo's below and read the DESCRIPTION underneath the type of backup
First One is INCREMENTAL
Second one is DIFFERENTIAL
Third one is NORMAL
There are two other choices

The choice you want to just add files Created or Modified since the last backup, which will mark the files as being Bkdup, is Incremental.

Clear as mud!
If you need more detailed instructions, please let me know as I have only written these up very quickly and have not gone through all the steps.

hugs n roses, Meganne

Thanks everyone for your quick
responses.
Hugs Bev