90% black not setting to overprint

[Davelikesbagels_twig]

Hello, using a pdf fix up to set all black text and vector to overprint. 
The 90% black tint doesn't seem to take the overprint fix but it does work if you set it indesign. 

It's not feasable for us to go and update all the object fills and linked vector (hence using the overprint fix). Any ideas on how to fix this? 

[JR Boulay · Accepted solution]

You must edit, or duplicate, the fixup.

A picture is worth 1000 words:

[Davelikesbagels_twig]

What settings did you use to create the new apply to? I tried with this. 

 

[Davelikesbagels_twig]

Just found that setting in a different sub group of the fixes... i'm sure they used to be all together. 

Thanks for pointing me at it