Full/incremental backups over the internet

[KluthR]

@JaredMc

In the scope of server/clients configured to use “Internet mode,” the data is only transferred from the client to the server once. Only once.

Is that true? Is that noted in the manual?

So basically: If clients are connected through internet, even a full backup would transfer only needed data? I only found this in the manual:

If the backup is incremental only new and changed files are downloaded. If the backup is a full one all files are downloaded from the client.. No other notes, even in the internet section of the manual.

EDIT: Just found this:
What to do about fulls is up to you. If you are running Internet clients they are disabled by default. You can also set the minimum amount of full file backups to zero in this case.
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Best Practice on Full/Incremental Backup for long-term Archiving

Run incremental file backups at least every 24h (set incremental file backup interval to at least 24h). Then set Minimal number of incremental file backups to at least 7. That covers the 7x daily backups. For the rest go to the archiving tab and Archive every week, month, and year. Seems you want to keep weekly backups for about a month, the monthly backups for a year and the yearly backups for 5 years. What to do about fulls is up to you. If you are running Internet clients they are disabled …

So if this is true, it shoud be noted at least clearly in the docs (sorry if it is, but I did not found it!). I would even go a step further and note that in the WebUI.

EDIT: Wait - are we talking about the internet_full_file_backups checkbox in the Internet tab (Allow full backups over internet)?