Elementor Containers vs Sections re background images

[milkycow]

Hi guys,

I have upgraded to the latest WP and installed Elementor which now uses containers instead of sections.
After importing one of the Astra templates, I can see a background image, however when I edit the container, I am unable to see the background image in Elementor to be able to change it.

Really appreciate any help here on editing background images in older Astra templates.

Thanks,
Simon

PS. I am a newbie to WP and Elementor so apologies if this is a dumb question.