Backup - How to merge with LuckyBackup?

[overkill22]

I just noticed that when I perform a backup using LuckyBackup, the destination folder will be ***erased*** and the content substituted with the new one.

Example A
first backup:

Code: Select all

FOLDER > file01, file02, file03
BACKUP FOLDER > file01, file02, file03

second backup (in the source folder I deleted the file02 and create a new one, file04):

Code: Select all

FOLDER > file01, file03, file04
BACKUP FOLDER> file01, file03, file04

Example B
first backup:

Code: Select all

FOLDER > file01, file02, file03
BACKUP FOLDER > file01, file02, file03

second backup (in the source folder I deleted the file02 and create a new one, file04):

Code: Select all

FOLDER > file01, -file02-, file03, file04
BACKUP FOLDER> file01, file02, file03, -file04-

In the settings there are only two options:
1. Backup the folder from source to destination as it is (example A)
2. Sync the source and destination (example B)

I want to merge the new files in source to the existing files in destination, without importing anything from destination to source.

Example C
first backup:

Code: Select all

FOLDER > file01, file02, file03
BACKUP FOLDER > file01, file02, file03

second backup (in the source folder I deleted the file02 and create a new one, file04):

Code: Select all

FOLDER > file01, file03, file04
BACKUP FOLDER> file01, file02, file03, file04

Example A is bad because, if I accidentally delete a folder from the source, at the next backup if I'm not aware, the same folder will be deleted also in the destination (backup folder).
Example B is bad because, I do backup to free up space in my folder, doing the syncing, both folder and backup folder will have the same amount of files.

Any suggestion how can I handle this?