I couldn't find this "Target Membership" related to any package file, even when clicking in the USDZ file. Can you please be more specific, @Hayyim ? Thanks!

Hey, Michael! Thanks for the fast response! Indeed, the Entity(named:in) works with the USDZs correctly. In this case, I don't need to use the ModelEntity constructor, but it definitely may be a good use case for other apps. Anyway this information could be better documented and the constructor typing shouldn't allow the use of the (named:in) signature with ModelEntity, if the in parameter must always be nil. However, the original problem is described here. Can you help me, please?

Thank you! You helped me find the solution. I'll explain it better in my next answer.