What is use of "|" from content control properties?
Unfortunately in no version of Word is there a built in onchange event.
What do want to happen to the other CCs when you change one? If simply replicate the content then you need to map them to a common XML data node.
If you want variable change, then you will need to create a custom onchange event. It is no walk in the sun, but it can be done:

http://gregmaxey.com/word_tip_pages/...om_events.html

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Greg Maxey
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