Apologies for the late reply. Yes there is a link however if you make any changes in Revit it won’t update in eToolLCD without refreshing the ‘Import’ section (i.e. ‘Upload to eTool’ button in Revit). This is only if new items have been added in Revit when you definitely need to match them to templates again. Material quantity changes in Revit should flow through into eToolLCD automatically. Please be aware that any changes in eToolLCD won’t be translated back into the Revit model though. So the link is a one-way traffic.