Sorry for late reply. I primarily use Inkscape for all my SVG work. I figured out that the only way for Plasmic to use my svg files is to save them as optimized svg. Saving or exporting as Inkscape SVG or Plain SVG will render them useless inside of Plasmic. There is no export option for optimized svg within Inkscape so you have to use the “Save as” or “Save a copy” option under “File” menu tab. Once the save windows opens change the “Save as type:” drop down option to “Optimized SVG”.