Lines disappear when exporting .ai to .svg. Please help!
When I export my .ia file to a .svg, my carefully drawn lines and arrows disappear. The image below shows my diagram before and after exporting from Illustrator to .svg.
Can anyone explain how to export from an Illustrator 2017 file to a .svg and preserve all elements of the Illustrator file?

Here are my .svg export settings:
This issue is holding up a large project. Would be grateful for any guidance. Thanks!
