We've had confirmed reports of issues with Delta Control plug-ins and Logic 10.4.5 when writing automation from the console fader.
Consoles will follow previously written automation, and automation can be written by using the controls in the plug-in GUI, but making changes from the console surface does not write automation.
This affects Matrix consoles, Sigma Delta, AWS and Duality.
We advise customers not to upgrade to Logic 10.4.5 to maintain normal operation of Delta Control.
UPDATE 15th July: This issue is also present in Logic 10.4.6.
UPDATE 9th August: This has been confirmed by Apple to be an issue with these versions of Logic. We advise customers not to upgrade Logic until we have confirmed the issue has been resolved in a subsequent version of Logic.