Brian,
I am just guessing right now, but try a couple of simple troubleshooting
tests to see if it is normal ops or a bug.
Add one of your alias tags to the DCF as well as the regular tag. If the
attribute no longer displays, then for one reason or another (and Epic will
need to determine bug or not), the DCF is not recognizing aliases while
hiding attributes.
If this works, you at least have a work around until Tech Support gets back
to you and lets you know what is happening.
Lynn