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This action also changes the particles' representation in the viewport and the typical crosses ticks appear:
The Thinking Particles are now available under Simulate > Thinking Particles > Thinking Particles Settings... where you have several option for control their appearance. The "Fluid" containers are located in the "Particle Groups" field from where they can be dragged and dropped to Cinema 4D objects. A connection to XPresso is not available at the moment.
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