I haven't tried the Forward package yet (real soon), but looking at the code
there might be a problem with HPO 5 and changing spool ids.
 
The problem (I think) is in LSF$FORW starting at line 70:
       70:    Call Diag 8,'TRANSFER' user 'RDR' spid 'TO *'
       71:    Call Diag 8,'ORDER RDR' spid
 
in hpo5 the Transfer commands causes the spool id (spid above) to change and
the Order (and following commands) won't work properly.  I believe a generic
(non hpo5 too) fix would be to change line 70 to: (but I haven't had the
guts/time to try it)
       70:    Parse Value Diag(8,'TRANSFER' user 'RDR' spid 'TO *') with ,
                    . . spid .   /* Use the spool id given by the command */
 
Phil