The only way to update datamodels or even re-publish a featurelayer is to disable the sync-capability with the consequnce that users are not able to sync with existing offline copies.
For maintenance in offline workflows it's important that at a certain point every offline-replica is replicated to online and no changes are staying offline.
To achieve a really useful workflow it needs several improvements:
- A process that forces the users to not starting to work offline after they successfully synced their work (with information in the applications etc).
- An overview for the administrator (owner) of still existing offline copies that did not yet sync (after the admin forced to do it)
- Or: a mechanism that allows "old" local replicas to still being synced or a least transfered back to the owner in case of malfunctionality during replication