Duplicated records

Sometimes duplicate records are generated after automatic data import. 
The new ones contain less data. 
Below is what is reported in the log file.

Thanks in advance



[23:07:43] ACTION: pmxi_before_post_import ...

[23:07:43] Combine all data for post BERTOLANI MARCO...

[23:07:43] Find corresponding article among previously imported for post BERTOLANI MARCO...

[23:07:43] Duplicate post wasn't found with unique key 001632...

[23:07:43] Applying filter pmxi_article_data for BERTOLANI MARCO

[23:07:43] CREATING BERTOLANI MARCO cliente

[23:07:43] Associate post BERTOLANI MARCO with current import ...

[23:07:43] ACF ADD-ON:

[23:07:43] - Importing field codice_cliente

[23:07:43] - Importing field ragione_sociale

[23:07:43] - Importing field indirizzo

[23:07:43] - Importing field cap

[23:07:43] - Importing field localita

[23:07:43] - Importing field provincia

[23:07:43] - Importing field telefono

[23:07:43] - Importing field email

[23:07:43] IMAGES:

[23:07:43] CREATED BERTOLANI MARCO cliente (ID: 15710)

[23:07:43] ACTION: pmxi_saved_post

[23:07:43] ACTION: pmxi_after_post_import