NW 6.0.5 with BM 3.7 SP2

Every time I reboot my BM 3.7 server, the filter exceptions are no longer
listed in filtcfg... I have to clean out the filters in NDS and run
filtsrv_migrate to reinstall them.

Once this procedure is done, the filters work and everything's fine, until
the next time I reboot the server, then I have to go through the entire
procedure again.

Since this server isn't getting along well with ArcServe backup, I usually
have to reboot at least once a week (soft abend), then go through the whole
procedure again...

Any ideas? I've tried using my backups of filters.cfg (just in case the
original is corrupted), but it doesn't seem to matter...

Thanks in advance,