I use the synchronization option in MyCLoud (iOS) between my iPhone-photolibrary and NAS MyCloudEx2Ultra. It works fine.
I noticed that when I remove a photo on my NAS it will be reinstalled by the synchronization function soon after. However when I rename a photo on my NAS no action is taken by the sync function.
Is it correct to assume that the sync function uses a synchronization algorithm based on an other attribute e.g. ‘time taken’ of the photo?
Where can I find a detailed description of the synchronization logics.
When syncing to an iOS device, the communication is one way. The phone is updating your NAS. The NAS is not updating your phone. This is a deliberate software design decision by apple and can’t be fixed from the NAS.
If you want something to trueley sync to phone, your only real choice is iphoto or icloud backups. Or some such. I never resolved the problem. I hate the way apple handles photo library managment. One strong argument to use Android devices.