Cloud sync overwrite existing files?

[sim667]

I’m using cloud sync to sync to mega, it’s quite a large amount of data (my media library), however when configuring the task it looks like the only option is to overwrite existing big data, which sounds like I’m going to be constantly syncing because it will overwrite the existing files on then cloud drive.

Is there no way to set it to ignore any existing files? I’m trying to use mega as a cloud backup, and would like changes to the media library synced weekly