That is an interesting challenge.

My first thoughts are to have a register of before vs after for the edits you choose to make to the master document. For instance, imagine a table which lists all the changes made to the master document - column 1 contains the original text, column 2 contains the new text. Now use that table to run a series of search/replaces in a client-specific document. If you find a phrase/sentence/paragraph from column 1, replace it with the contents of column 2.

Holding this in a table is just a concept and won't correspond to how you currently edit the master. But if the concept is sound, perhaps you could revision track the master and then the macro could go to each revision and search for the reject revision content and replace with the accept revision content.

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Andrew Lockton
Chrysalis Design, Melbourne Australia