Import from Musescore with Roman numeral Code

Dorico does not have the ability to automatically insert Roman numeral chord symbols, so I created a score with Roman numeral chord symbols added using a plug-in (Chord ID and Roman numeral analysis) in MuseScore, exported it as mxl, and imported it into Dorico. However, the chord symbols are not imported.
Is there any way to import the score including the chord symbols?

Welcome to the forum, @miura.rikimatsu. I don’t know for sure how MuseScore encodes Roman numerals when it exports MusicXML, but I imagine it probably uses the dedicated feature provided in MusicXML for this purpose. However, because Dorico doesn’t yet have native support for Roman numerals, Dorico also does not import this data from MusicXML (because it has no way to represent it).