Hello,

As of  now the official notification of PUBDET 2022 isn't released yet, but if we go through last year information bulletin then yes for fresh admission of existing year only candidates who passed the required educational qualification from previous year are eligible, check out at https://wbjeeb.in/files_information-bulletin-pumdet-202149.pdf to know more details regarding this,

however when it comes to BHU PET, there is no such mention that only candidates who hold the required educational qualifications from previous or existing year are eligible, if you're seeking admission in MA Geography, then candidates who have passed BA Hons in the concerned subject or passed BA having studied the required subject in all three years  of graduation securing 50% marks are eligible regarding this, as of now the admission schedule of pg admission of BHU isn't released yet, though you may consider checking out last year information bulletin of page number 23 at https://www.bhu.ac.in/admission/international/aug2021/info//PET%20Information%20Bulletin%202021.pdf to know more details regarding this.