When a timeline view is exported it does not export the following settings:

$handler->display->display_options['style_options']['display']['width'] = '100%';
$handler->display->display_options['style_options']['display']['appearance']['theme'] = 'ClassicTheme';

I was having trouble getting my view to import with a feature properly. The view's page would show up, but the timeline itself wouldn't show up until going into the display settings for the view, clicking apply, then saving the view. Adding those two settings to the master display in the view export helped. Obviously, if you don't want the width to be 100% or you don't want to use the classic theme you'll need to set those to your desired values.

I'll try to look into a fix when some time opens up for me, but thought I'd post this for now in case anyone needs it.