Robohelp 2019 converts svg files imported into framemaker document to jpg in Robohelp

When I import a FrameMaker 2019 document into RoboHelp 2019 the svg files which were referenced into the FrameMaker document, are converted to jpg files. I do put a checkmark in "Do not regenerate files" in the import setting. I was expecting RoboHelp to use the files used in the FrameMaker document, but it seems i generates its own. Why is that?...