Imported Scapple file too large for Scrivener to display?

I imported into Scrivener a Scapple file that I’m using as a timeline for a novel, but when I view it in Scrivener, it appears only as the Scapple icon and the only way I can actually see it is through Quick Look. But is the file too big for Scrivener to display it? I’ve imported other Scapple files that were easily viewable, but admittedly they were smaller in size.

(I can edit it in the “external editor” (i.e.Scapple), so no issues with that.).