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I like so much when questioners care about the community by sharing their own findings. Thank you! *
Just so you know, we are encouraged to mark our own answers as correct (green star) when they so are. In this case it is. That said, I managed to make your source to behave nicely without the use of schema.ini as shown below:
* Tableau Community I think questioners caring enough to answer their own question with the purpose to benefit others should be honored with a badge (and points) and or mentioned in the Weekly Digest. This is a behavior worthy of imitation and thus something that should be encouraged by being honored.