Dear client,
As per the Passport Seva Manual, if there is a mistake in the personal details mentioned in the earlier passport, the applicant should apply for a re-issue of the passport with the correct details. In your case, since you have a birth certificate from Mauritius, which is your country of birth, it is advisable to mention Mauritius as the place of birth in the re-issued passport.
Regarding the name change, you have an affidavit for the change of name from Dwip Sinha to Saptarshi Sinha, which can be submitted as proof for the name change. It is recommended to mention the correct and current name, i.e., Saptarshi Sinha, in the re-issued passport.
There may be some questions asked by the authorities regarding the change of personal details, such as why it was not mentioned earlier. However, since you have all the required proofs, such as the birth certificate and affidavit for the name change, it should not be a significant issue.
It is always advisable to provide accurate and correct personal details in the passport application, as any incorrect information may cause delays or rejections in the passport issuance process. Therefore, it is recommended to mention the correct and current details in the re-issued passport.