1. Generate pdf in MicroStation file>Print option use “Pdf.pltcfg “style.

1. Import generated PDF in MicroStation.
   How to import and edit PDF file in DGN - MicroStation Wiki - MicroStation - Bentley Communities)

1. Review the pdf Text, you will find all text Break (exploded Text) and you cannot edit that text.
   
   Refer following screenshot Pdf generated in S3d. and when import in MicroStation text is editable (all text is intact)

Our expectation is, MicroStation should generate PDF, without exploding text.

Please let me know if you need any more info.

Regards,

Abhijit Bute