I am having the same issue. I killed the session and the export was complete with the correct number of records in the attribute table. However, there are additional fields being created at the end of the table that are concatenated from existing field names. For example I have a field named PRE_DIR that is valid but at the end of the table a new field has been created called PRE_D_DESC. There are no attributes in the field. This appears to be the reason it is taking so long. See attached.
... View more