# Recurring sync-conflicts **URL:** https://forum.syncthing.net/t/recurring-sync-conflicts/21665 **Category:** Support **Created:** [February 17, 2024, 9:42am UTC](https://forum.syncthing.net/t/recurring-sync-conflicts/21665 "2024-02-17T09:42:08Z") **Posts on this page:** 1 **Showing post:** 9
### Author: ![xarx](https://forum.syncthing.net/letter_avatar_proxy/v4/letter/x/ba9def/32.png) [@xarx](https://forum.syncthing.net/u/xarx) #### Post date: [February 21, 2024, 6:18pm UTC](https://forum.syncthing.net/t/recurring-sync-conflicts/21665/9 "2024-02-21T18:18:33Z")
1. The second cathegory of sync problems is caused by sharing folders inside already shared folders (and has no relation to Obsidian). I have the Obsidian folder shared N ↔ T ↔ M ↔ N. But I also have its superfolder Documents shared M ↔ T, and this is the cause. In [Sync a subfolder of an already synced folder - #3 by Alex](https://forum.syncthing.net/t/sync-a-subfolder-of-an-already-synced-folder/16164/3), there’s a warning, but not a serious one. In fact it turns out, that in this case synchronization can cause a lot of conflicts and even more serious troubles. For instance: 2a. Files and even folders can disappear. Scenario: - i. I create a directory tree at T - ii. ST replicates it to N - iii. At N I validate it, if it is not good enough, I delete it. - iv. The deletion is replicated back to T. - v. At T I recreate a new version of the directory tree. - vi. Now, the synchronization of the superfolder steps in, and replicates deletion of the directory from **M**. The more serious situation may be when the M is disconnected for some time, and when it connects, it **deletes the final version** of the directory tree. To prevent this, the Obsidian subfolder must be ignored in the synchronization of the Documents superfolder. **Conclusion** I think, there should be a more serious warning written somewhere, e.g. in FAQ - don’t do this, if you do not want to lose data. There are also other problems that I haven’t analyzed yet to learn the cause. --- _[View the full topic](https://forum.syncthing.net/t/recurring-sync-conflicts/21665)._