I read about a trick you can try: change table field to plain text format, do the import, change the field to rtf. OP said that worked BUT they stated that the formatting showed in a form. They didn't say it did so in the table as well. To test that fully, you may need to whip up a form with a textbox formatted as they did (plain text) then alter both the table field and the form control. If it works, it would be a start. Then you'd have to figure out what you would be willing to do to accommodate. One way might be to open the form in design view, alter the control then switch to form view but don't save the form design. I'd want to open it hidden, but I don't know if it can be hidden in design view as I've never tried.
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.