16.3 - Sending Message Events to Process Models

The release notes for Appian 16.3 contains the following (forum.appian.com/.../Appian_Release_Notes.html

Sending Message Events to Process Models
We've deprecated the ability to send messages to process models from the Setup tab in the Send Message Event smart service. Sending message events to process models this way has negative performance impacts.

Use the Start Process Smart Service instead.

The last part implies this is only for start message events, but the body implies it applies to all message events, including intermediate message events. Would someone be able to clarify exactly what is being deprecated? Removing the ability to message process models (and therefore in-flight instances) altogether would be a serious loss of functionality and would place Appian behind its competitors as fa...

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