Matrix: How do Logic Maestro diagrams deal with ECS labels if they keep changing?

Customers often find that their Logic Maestro diagram fails if the ECS port labels have changed in the configuration.
To prevent this , you can use the following work around Use a Fixed Group(s) in ECS whose names are used in the actual Logic Maestro diagram. (like LMGRP1 or LMGRP2 etc).  Place the port (whose name may change) into the Fixed Group in ECS and only use the group labels in Logic Maestro.In this way the port labels can be changed but leave the logic still intact.