If you accidentally close an in-process job, all costs that were in WIP will be written off to the item's inventory adjustment account (if the item is Actual-costed) or to variance accounts (if Standard-costed). Also, the WIP buckets on the job will be cleared.
The system writes these WIP-clearing entries to the SF Dist journal. You can change the job's status back to Released to continue processing, but doing so does not move the written-off cost back into WIP.
Therefore, the only way to recover the WIP costs is to issue a non-item master material to the job for the total cost that had been written off. When you do this, you can enter the cost at which to issue the item and the offsetting account to WIP. The detailed steps are as follows (read all the steps before attempting this process):
There may be up to five entries to the job's WIP accounts (material, labor, fixed ovhd, variable ovhd and outside). If the parent item on the job has a cost type of Actual, the offsetting account is Inventory Adjustment. If the cost type is Standard, the offsetting accounts are Material Usage Variance and/or Routing Variance.
If the item is Standard costed, both Material Usage and Routing Variance may have been hit. If only one of the two were hit, enter that account into the Other Account field. If both were hit, enter one of the two accounts and then enter a general journal transaction, which reverses the appropriate amount into the other account.
"Not one job material where item is RECVRD_WIP_COST exists for job operation that has [job number] and [operation number]. Add will be performed for job material."
At this point, all of the costs will be back in the WIP accounts in the general ledger and the job's WIP buckets. Also, the amounts will have been reversed from the accounts into which they had originally been cleared.