How to replicate Error:
Create Start Button
Rename Tag
Assign Tag to S7-PLC IO
Rightclick on Button → Configuration → Switch from Momentary to alternate (or other way around)
Start Button Tag loses name and PLC-IO Assignment.
How to replicate Frustration:
Create 80 Start Buttons
Name them all
assign them all to plc Ports
switch them all to Alternate function
Repeat Steps 1 to 3. 