Regarding whether the student status files are automatically transferred to the National Open University: According to the Regulations on Academic Degrees in People's Republic of China (PRC) and the Measures for the Administration of Student Status in Colleges and Universities promulgated by the Ministry of Education of People's Republic of China (PRC) (No.41), the student status files should be filed after completing their studies. If your original school has handed over your student status file to the National Open University, then your student status file should have been transferred to the National Open University. You can contact the relevant departments of the National Open University for details.
About the problem that you can't find your file in the national government affairs network, Liaoning talent network, Shenyang talent network and Fuxin talent network registered by you: It may be because your file has not been updated on these websites. I suggest you contact the original unit and the local human resources and social security bureau to check whether your personal file and student status file are complete. If you still can't find it, please wait patiently for a while before trying to find it, or try to contact other relevant departments for consultation.