This statement is from the release notes - section People:
- Contacts saved on the device are no longer synced to all accounts, only the account you have chosen
Means, that each contact has at least one source: phone, and maybe more synced accounts like Google or NextCloud in parallel and these can only be edited for one part/source and no merging possible.
Some question arise with that:
- how can I manage for each contact, or better for all contacts at once, this sync-accounts? Like to have all contacts synced to various accounts in parallel: add a sync-account to all contacts at once.
- how can I enrich/combine the data from different accounts into one dataset for each contact? If my local phone-part of a contact does not have the phone number included, WhatsApp will not know this contact at all