Really stuck! Only one link renders in revit

[Anonymous]

Hello, I'm having trouble rendering. 

I don't understand why this is happening..

I have linked 4 cad layers into revit and want to render them. I have assigned each link a different material and tried to render a view but it only allows the first cad link to render to the material I chose, all the other links remain grey.

I have tried this numerous times, I hope the pictures help. 

[barthbradley]

The linked file material definitions and assignments will determine the material appearance in the host project.

[Anonymous]

Thankyou for your reply,
 I'm sorry but I don't understand, what do I need to do? 

[SallyDong2005]

I 'd like to move this topic to Revit forum for there may be more Revit experts could be helpful.

[ToanDN]

Are the other links under a previous phase?

[Anonymous]

Yes please, you can move the post to Revit forum. Thankyou

[Anonymous]

I don't know what phasing is but I have heard of it, is this something which is important to rendering? I will try an find a phasing video on youtube.
Thankyou for replying.

[cbcarch]

Try setting the Phase Filter in your rendering view to Show Complete.