Underlay settings do not provide the desired result, what can be done?

[eliav5221576]

Hello everyone,
Im trying to use underlay to see the floor below (I'm working on a complicated project),
but I don't see the whole plan below,  some elements is hidden, and I can't fix it.
Does anyone have a recommendation on what to do? Maybe an add-on for pyrevit?
I need to get to the point where I can see the entire plan below perfectly.
Thanks for the help

[Rana_HamedEREMS]

Hi Eliav, 

check the solution for this issue in the link, I think it will guide you perfectly. https://forums.autodesk.com/t5/revit-architecture-forum/override-underlay/td-p/7217172 

[barthbradley]

Check your View Phase/Phase Filter. Maybe you're in a Phase prior to all those elements. 

[eliav5221576]

thank you for the answer! I couldn't understand all the steps, he wrote briefly

[eliav5221576]

I checked, that's not the case