I’ve responded to Patchen directly, but just so depreciated modules system is clear for other users:

We have depreciated the modiirq module and have not yet provided a replacement for it. The module will show up as crossed out in VSig but it is still available to use.

The module will continue to work up to and beyond the point where we provide a replacement, so you don’t need to worry about reworking your sigfiles when the modules are depreciated.