Question:
Why is the Date Field not Mapping in Inbox Item after Import via Inbox Loader?
Answer:
If there is a date field with the API name including 'idate__v' present, then this date field should be used for import mapping records.
For example, if the following New Info Date fields are present:
new_info_idate__v
new_info_date__v
The import mapping needs to be done for the new_info_idate__v API name.
To check fields on the Inbox Item object navigate to the Object field page: Admin > Configuration > Objects > Inbox Item > Fields.
Related Documentation:
Vault Help Documentation: Manage Safety Inbox Loader Multi-Case Tabular Data Import