UMG Buttons break when Importing canvas into main UI blueprint

Hi all, I’m currently working on my main application UI (Product configurator) and am building the main panel itself in a separate Widget Blueprint to keep things organized and tidy - pretty much like building blocks.
image

When importing my Material Selection pannel into my main UI Widget Blueprint, the button functionality doesnt work anymore, as if it cant seem to connect to the buttons.

Are there any settings I need to enable, or what are the best practices in this scenario?

Example of an error:

On Clicked (BTN_EXT_Color_Black) does not have a valid matching component!

EDIT: I’m a fool. I had the same WBP Graph in my Main UI as I did in the Graph. Obviously I can just have an empty graph in my main UI as the buttons etc are sorted out in the Pannel WBP.