When exporting scenes from Storyboard Pro to Toon Boom Harmony, the markers are exported automatically. All information about the markers (time, duration and note) will be brought over.
For more information, see Exporting Harmony Scenes
From Storyboard Pro:
To Toon Boom Harmony:
NOTE In Storyboard Pro, any marker having a range that exceeds another scene, will not be exported in the second scene in Harmony.