Material Substrate not allowing merge actors (merge materials) to work properly?

Development Programming & Scripting Blueprint
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I have a static mesh with 2 materials (both substrate materials. Unreals new material system) and want to merge them. I tried going the route of merging the actors however i get these things from this static mesh.

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I’ve never used the merge actor for the material merge before. So i don’t know if it is substrate causing it. But i’ve seen youtube videos of this working and they were not using substrate.

I’m assuming unreal hasn’t implemented it yet for merge materials to be used with substrate. But i’ve not seen anyone post about this. So maybe it’s a me thing. Thoughts?

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Hello there @AnimalAce!

Indeed, the Merge Actors functionality is still not compatible with Material Substrate, since the feature remains in a Beta state.

At the moment, as a workaround, you can temporarily convert your Substrate materials back to regular materials for merging, then recreate the results as Substrate. This should work, until the features can possibly work together in a future update.

You can follow the latest changes related to both topics by checking their related UE docs:

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Thank you!