SVG Dissapearing

I have 5 SVG files I have to import and animate. They import fine and work as expected.

However, every time I exit resolve, and come back to working on the animation the SVG files behave strangely. They drop out for a few frames to start with, then disappear altogether.

I then have to reimport them and all is fine again. This is very annoying.

Is this a known problem with a solution or just some strange bug I am having to deal with...

V17.0

Thanks