Hi,

Regarding the demo.xml file, I tried the following scenarios:

• having the <data></data> empty, resulted in no import (logically :))

• with several records, resulted in filling the list.

• with existing records, tried to modify a value in the first record,
  the value was not updated - Why ?

• with existing records, tried to remove or comment a record, the record was not deleted

• with existing records, tried to remove all records, nothing was deleted
  

• tried to create a new record, the record was created
  

 Can you help me out with this one, please ?