Before editing the expressions was:
xdXDocument:GetDOM("Action Item Title Import")/dfs:myFields/dfs:dataFields/dfs:Action_Items/@Title[. = xdXDocument:get-DOM()/my:meetingAgenda/my:actionItems/my:actionItem/my:actionItemTitle]
I tried replacing with current(), but I'm not sure I'm putting it in the right place as the ...