In the past two months or so, I've had 3 or 4 work orders completely disappear.  I looked in the closed and cancelled work order history and there's nothing there.  It seems to only be the parent work order.  The child work orders all remain.  I can't restore from my backups because I will lose all the work I did for the day.  I've been adding it as a new work order and it seems to re-attach itself to the child orders.  Is this the same glitch that's in DBA 2002.4?  I just don't understand where these work orders are going or why they're disappearing.

After you put the work order back in, if you go into WO-A and click Material, are the components duplicated?  If it was some kind of hiccup and the Work Order Header file lost a record, the WO BOM records would still be there so when the WO was re-entered, you would end up with duplicate BOM entries for all the components.  If the WOBOM only has one set of entries, then it looks more like the work order was purged because the purge program also deletes the records from WO BOM and other associated files.  However, it is tough to "accidentally" purge a work order, it first needs to be closed or cancelled and then somebody needs to run the Purge WO program.