As per your indication, you do have certain backlog papers in your even semester.
Irrispective of even or odd semester, you need to clear all backlogs within the time prescribed by your university and failing to clear the backlogs would affect your final examination. Even if you have cleared the final examination, you would not get your final degree.
While attempting your current semester, you will have to work out a planning to clear your backlog papers even with the proper indication in the examination - form.
Ensure that your backlog papers are cleared along with the papers of current semester.
Delaying your backlogs further would be a cause of worry for you and would create pressure in the line of preparation for the examination.
Hence be serious in your attempts of backlogs, in case you face difficulty in the preparation, meet your professors of the concerned subjects so as to have a better guidelines for such papers. You may also look into the past question question papers of the university in which you have backlogs. Going through the past question papers, you could infer the pattern of questions likely to be asked in the next time.