There's a setting in Collection Manager (shown below) that will allow you to hide products that are currently in an "unpublished" state. It can be found in the "Display Options" on the "Full-screen sort" page.
To view the display options, click the Display Options button in the title bar of the collection you're currently viewing.
Clicking on Display Options will show the window below. Make sure the "Show unpublished" setting is set the way you want it and click Apply to save the change.
Happy collection managing!