Judging from your introduction, you are honest, so you are worried that the information is not true. In this case, it is best to seek truth from facts. The information was incorrectly filled in before the new work unit was explained, and it was corrected when entering the job. If it is a regular work unit, you should fill in the employee resume when accepting personnel relations and files. You should fill it out truthfully, don't hide it, don't make a false report. I believe that the new work unit will not haggle over every ounce. In addition, if the resignation certificate refers to the resignation certificate stipulated in the Labor Contract Law, this certificate may need to be stored in the file, and the original work unit can only fill it out according to the actual time.