Last week, Koji cleaned up the LSC model to make it much more readable, while he was working on piping the ALS signals to the LSC model. However, somehow the DAQ Channels block got deleted before the model was committed to the svn. Since there were 2 months between svn checkins for c1lsc.mdl, it's possible that someone had the model open just to look at, and the block got deleted, and that's the version that Koji started with.
Anyhow, thankfully we have the svn, so Koji and I found that the DAQ Channels block was (as expected) in the previously checked-in version of the LSC model. I put a copy of the old model onto my desktop, opened it up, copied the DAQ Channels block, and then pasted it into the new cleaned-up version of the model. (Jamie - is there a way to conveniently download a previous version through the web interface?)
I have checked it in, compiled and restarted the lsc model. The _DQ channels are back now.