How can I have a edit box present on two different controlled by variable tabs and it update across both of these if edited? 

Currently when a user enters data in this edit box and saves, once they refresh / click back on file data is missing....  My VAR has been supporting me with this issue and we have now identified that this is seemingly my problem.  What we established is that it seemingly updates the datacard with the information which is found on the 'first tab' which in my case tends to be blank.  So if the second tab is the one associated with the document and you look to modify the data within a shared edit box.  It then updates off the first controlled tab and hence wipes the updated data.