The upside down behaviour sounds like failure to convert coordinate systems: SVG has its y axis going down from the top left (like pixel coordinates) but EPS an

The upside down behaviour sounds like failure to convert coordinate systems: SVG has its y axis going down from the top left (like pixel coordinates) but EPS and PDF have their y axis going up from the bottom left (like maths plots). There has to be a better way than dealing with EPS files in 2021 though. It's a pretty archaic format, and poorly and incompletely supported by most programs. Can you use PDF for the embedded image instead? That's what I do when generating PDFs with PDFLatex and friends.