Feature Service Sync Edits/Conflicts

[WalkerHenry__NIFCAdmin]

Would it be possible for edits coming in via Sync to be updated by attribute instead of by row for feature services?

We have issues with field users taking Collector offline in the morning (and updating certain fields) overwriting bulk updates (on different fields) done in the office when they sync at night.

Even better would be real conflict resolution like versioned data.

[RussellBrennan]

If you set up your services such that they are published from a versioned dataset (enterprise geodatabase) and you publish by reference instead of a hosted service, this is already supported. 

See: https://enterprise.arcgis.com/en/server/latest/publish-services/windows/offline-maps-and-versioned-d...

This is also a video from 2.1 (but still relevant) for working with versioned data: https://youtu.be/6VnRHvWWjjA?t=796 

With this workflow you can perform reconciles after edits have been synced and choose how you want to define conflicts. 

I am not sure if this would be helpful for your needs. Or perhaps your request is more specific to working with Hosted data?