Grant, this is working beautifully. But I have one final question. I'm quoting an offline reply here so others can see it.
In your response you said:
However, in the case of Zotero there is a problem with journal articles having Journal Name mapped into the BookTitle KA. The problem here is that Zotero is using the RIS tag T2 to hold the Journal Name, while Tinderbox is expecting it be contained in RIS tag JA. RIS contains ambiguities. Again, you can add code that maps RIS tags into the appropriate TBx KAs.
I have tried to write a rule that would switch the tags following your original code, but am afraid I keep getting it wrong. Would you mind telling me what code snippet would let me reassign the T2 and JA RIS tags? OR you are welcome to point me to some part of TB Ref or elsewhere so I can learn how to do it myself.
Thanks again. With this one change, Zotero users can start to adapt Jeff Taekman's system.