The client has deleted data on the server instead of synchronizing it.

[IMEIICCID]

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Due to a mistake I destroyed my MacOSX System :-(
Luckily I had a Time Machine Backup :-)

This backup was a couple of weeks old and with it I could restore my system to 100%.
Bad News! The Nextcloud Client did delete files on the server, which where not in the client directory (MacOSX) ,
instead of sync this files.

Expected behaviour

The client should syncronize all existing data on the server to the client.

Actual behaviour

The client has deleted data on the server instead of synchronizing it.

Steps to reproduce

1. Restore a MacOS System from a Time Machine Backup than you will see the mess
2. The sync folder in the Time Machine backup should have fewer folders than the current one on the server.

Client configuration

Client version: Nextcloud Desktop-Client Version 3.1.0

Operating system:

OS language: MacOSX 10.12.6 Sierra

Qt version used by client package (Linux only, see also Settings dialog):

Client package (From Nextcloud or distro) (Linux only):

Installation path of client: Standard

Server configuration

Nextcloud version: Synology Server Nextcloud 20.0.4.

Storage backend (external storage):

Logs

Please use Gist (https://gist.github.com/) or a similar code paster for longer
logs.

1. Client logfile:

https://www.dropbox.com/s/bdlrwg5j5au0jhg/client.zip?dl=0

Since 3.1: Under the "General" settings, you can click on "Create Debug Archive ..." to pick the location of where the desktop client will export the logs and the database to a zip file.
On previous releases: Via the command line: nextcloud --logdebug --logwindow or nextcloud --logdebug --logfile log.txt
(See also https://docs.nextcloud.com/desktop/3.0/troubleshooting.html#log-files)

2. Web server error log:

3. Server logfile: nextcloud log (data/nextcloud.log): https://www.dropbox.com/s/d0x0ak3ccsiapnd/server-nextcloud.log?dl=0

[camilasan]

I am sorry that this has happened.
I will check the logs.

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