I removed a 350kb PSD, replaced it with 70kb vector and my .riv file got over 100kb bigger

I added a duckhunt2.psd to my Rive file and added its layers to my artboard. According to the assets panel, the PSD was 350kb.

I removed the relevant elements from my artboard and deleted the PSD from my assets. In its place I added a 70kb vector. My .riv file went from the mid 400's to over 600kb.

Is it possible that the PSD only got removed from the assets panel, but is still being bundled with the .riv? Rev and Riv attached.