Do we need User.dat to be loaded for creating User account

Summary:

Relevance of User.dat file load through HDL to create User account, when we have User Account Creation Option set to Both person and party users

Content (please ensure you mask any confidential information):

We are loading employee record to Oracle via HDL User.dat file.

Below is the taxonomy of the User.dat file:

METADATA|User|PersonNumber|RoleCommonName|AddRemoveRole|Username|GenerateUserAccount|CredentialsEmailSent|Suspended
MERGE|User|444444|||444444@test.ca|Y|N|N

In the Manage Enterprise HCM Information task has the below setup done.

There are 2 questions:

1. If we have the above enterprise level setup for User Account Creation and we have role mapping provisioned too. Do we need to load the User.dat file?