no you can't do anything without the original assets like tileset/parallaxes/characters and if they are using a layer plugin then you need the layer folder so everything that's inside the img folder and the data folder without the img folder when you save the show image will be blank
with the img folder
◆Show Picture:#1, outhouse_ryan_handjob_Cum01, Upper Left (0,0), (100%,100%), 255, Normal
without the img folder
◆Show Picture:#1, , Upper Left (0,0), (100%,100%), 255, Normal
but it can be done but you need to know how to edit the json files and know which image goes to the right character