UserOAuthProvider テーブルと UserAuth テーブルでこれらのフィールドが同じデータで重複している特定の理由はありますか?
UserName: someusername,
Email: "someusername@somedomain.com",
PrimaryEmail: "",
FirstName: null,
LastName: null,
DisplayName: "",
BirthDate: null,
BirthDateRaw: null,
Country: null,
Culture: "en",
FullName: "",
Gender: null,
Language: null,
MailAddress: "",
Nickname: null,
PostalCode: null,
TimeZone: null,