In this case, is it possible that the sync will finish without sending this document?

A related question is: what happens if a sync is requested by a replica that knows a local generation previous to the one we started encrypting documents and inserting into the sync-db? For example, we open a deferred-encryption Soledad session and current local generation is 10. Then we insert 5 new documents, which are encrypted and inserted in the sync-db. Then we are requested to sync with a replica which has never seen any data from this local replica. What happens to the 10 initial documents which are not in the sync-db?