DDPLUS Problem

I'm getting several fire weather products that come through with "!unknown
2_1/" on the headerline which is causing LDM to fail when trying to write
the file...

2198 20040429144328.592 IDS|DDPLUS 10289769  FNUS73 KFGF 291441 /pFWSFGF
!unknown 2_1/

244 20040429144340.304 IDS|DDPLUS 10289896  BMBB91 KFGF 291442 /pSTQFGF
!unknown 2_1/

Any idea where that's coming from and/or how I can get LDM to ignore?

 - Rob