We have observed that if we add reference lines to a Control Chart Builder and then save the script to data table, that when re-executing the saved script back from the data table the reference lines are not plotted even though they are in the script. Under certain conditions we can get them to display if we open the saved script for editing and run the script from a script window.
This was reported via tracking number 7613389623 with a specific example provided to reproduce.
Support responded with indication that this "may be tied to a larger issue within Control Chart Builder" though I'm not aware of what other issues may be involved here. Support indicated that this is a "bug with high priority".
Sharing here to ensure it has appropriate visibility.