There is a misunderstanding that needs to be explained. Checking the duplicate is not necessarily related to whether you can pass the external review. The repetition rate of a paper is the criterion to judge whether your paper is plagiarized or not. External audit is based on the innovation, workload and rigor of the thesis to determine whether your thesis level meets the standard of master's graduation. There is no connection between the two. It is not checked before it is sent to the external audit, and the final paper will be checked when it is sent to the school.
However, if you fail to meet the standards in the external examination and re-examination, you can't graduate. Of course, if the second interview is not up to standard, the consequences will be more serious. So they are not causal, but binding! I wish you a smooth graduation!