Dashed ties can be placed as text, using the NoteHedz user font, from the Scriptorium. This method works in NWC1 or NWC2.

A dashed tie is constructed from end curves (which may be up or down), and as many connecting dashes as necessary to fill. Since the dashed tie is text, it has no effect on playback. You must view the tie in print preview to see how it actually relates to surrounding notation.

In NoteHedz, the characters needed are at code locations 249-253.