Knowledge elements get mixed up
when I close my desktop Citavi and then don't open it for a while (let's say 24h at least), upon reopening the knowledge elements are completely mixed up (within one subchapter). It's also not all knowledge elements of all chapters, but only ones in certain subchapters. I can't really remember when I first realized this but it's been happening for a few weeks now and I'm losing my patience. Also sometimes the structure remains the same when I close and reopen, but then at random it gets mixed up again.
It'd be great if someone could help me with this!
Thanks in advance.