Problem

When you insert multiple rows in one batch, the store is not able to relate the records sent to the resultset,

Solution

In the "write" event of the store, we have two lists of equal size "records" ( data send) and "resultset.records" (requires backend return records inserted), so only assign the data of the recordset to the data in the store ( linked with records).

If there is a better solution i would appreciate your comments.