A copied image note won’t paste:
In Scapple Beta 184.108.40.206 (11102), if a note contains an image, it won’t paste to a new Scapple Beta document. Notes with text do copy/paste successfully, and in the official Scapple (1.2.4), copying and pasting an image note from one Scapple document to another works as expected. In the Beta, dragging text notes from one document to another works; dragging image notes doesn’t. (I’ve tested this multiple times.)
FYI, dragging or pasting an image file into the latest Beta build still works.
I hope this helps.