I AM able to get the header information when changed using this method, just not the detail information. 

Upon further review, it looks like the sales order and quote history field is updated as soon as an item code is changed, NOT when I hit accept. Is there a way to pass variables between scripts? I'm assuming I would have to do a post-read on the SO file before changes, and then pass this to my current script but not sure how.

Look at SetStorageVar and GetStorageVar.

Thanks Kevin, This seems to work for a single variable, but if I try to pass through multiple variables I get the error: Invalid/Missing variable on the GetStorageVar Method. 

Here is my SET code: (Post Read on Header)

Set oLines = oBusobj.AsObject(oBusObj.Lines)
oLines.MoveFirst()
do Until cBool(oLines.EOF)
     retVal = oLines.GetValue("ItemCode$", itemC)
     aItem(n) = itemC
     retVal = oSessionScript.SetStorageVar(CStr(mStr), aItem(n))
     mStr = mStr & "a"
    retVal = oLines.MoveNext()

Loop

Here is my GET code: (Pre-Write on Header)

g = "a"

set oLines = oBusObj.AsObject(oBusObj.Lines)
oLines.MoveFirst()
do Until cBool(oLines.EOF)
     retVal = oSessionScript.GetStorageVar(g, a)
     retVal = oLines.GetValue("ItemCode$", itemCD)
     if itemCD <> a then
          retVal = oLog.SetKey(itemCD & a)
          oLog.Write()
     end if
     g = g & "a"
Loop

For got an oLines.MoveNext on my GET(). Working now...