Going through the "official" Ironbirds roster and a few names stood out that @Frobby mentioned in another thread:
Ty Blach (who was apparently signed in March,) Dallas Litscher, Conner Loeprich, Rickey Ramirez, and Greg Cullen are all listed on the roster and designated as being on the "7 day injured list."
Could be paper moves, but this could also show where they will be once recovered from their injuries.