Answered
Does Acrobat 9 still support SOAP-based collaboration, based on sdkSOAPCollabSample.js?
I don't see any reference to SOAP collaboration in the Acrobat 9 SDK. Also, the "Online comments repository" section has been removed from the Preferences>>Reviewing dialog. (In Acrobat 7 and 8, we had to set the Server Type to SDAS SOAP to make collaboration work.)
You can use Javascript to set that server preference. The Acrobat client can be configured through the use of the JavaScript SOAP.addAnnotStore and SOAP.setStoreSettings methods.
I believe the documentation incorrectly states that this can be set in the application.
Lori Kassuba is an AUC Expert and Community Manager for AcrobatUsers.com.