When I update an existing record (say, a customer) by using DIXF the record is updated with the values from the sourcefile - BUT - all target fields that are not included in my file are blanked.
So DIXF can only be used for updating if the sourcefile includes ALL the information on the target - or what?
This means that the typical task of updating a single field on a target entity after a data migration requires:
a) The original sourcefile enriched with the field missing in the data migration (assuming that the target records have not changed since the migration) or
b) Writing a job to read the sourcefile, locate the relevant record and updating it (aka the old-fashioned way)