update_recordset statement not working. The same with while select forUpdate works..

Hi,

any known issues about this?

I've encountered a custom method which tries to update a set of record by joining 2 tables with the update_recordset statement. Something like:

update_recordset myTable1
                            setting [fieldsList]
                            join myTable2
                                where [conditions]

The instruction returns this error "could not update a record" and i can see this join doesn't retrieves anything.

If i do the same with a "while select forUpdate" statement, it works fine. The records are retrieved and updated.
Obviously this takes much more time than the update_recordset.

Any idea about this issue?

Thank you in advance