I have also faced similar issues to convert MBOX files into PST format and I am looking for many solutions but I didn't find any exact solution. But after much deliberation, I finally found SysTools MBOX to PST Converter, which is an excellent choice to convert single or multiple MBOX files without losing a few information.
For More Information: https://www.systoolsgroup.com/mbox-to-outlook-converter.html
I have also faced similar issues to convert MBOX files into PST format and I am looking for many solutions but I didn't find any exact solution. But after much deliberation, I finally found SysTools MBOX to PST Converter, which is an excellent choice to convert single or multiple MBOX files without losing a few information.
For More Information: https://www.systoolsgroup.com/mbox-to-outlook-converter.html