When you "Post WIP to the GL", approved and unbilled time will post into WIP by debiting Agency Time (Asset) and crediting Agency Time Adjustment (Income) account specified in the Control Account screen.
When labor is then billed after being posted to WIP, it will then reverse out of WIP the next time WIP is posted by crediting Agency Time and debiting Agency Time Adjustment accounts.
For Other Expenses (including approved Misc Costs and Expense Reports) left unbilled, it will post into WIP by debiting Other Expense (Asset) and crediting Rebillable Expenses (Income) accounts specified in the Control Accounts screen.
When other expenses are billed, it will reverse out of WIP the next time WIP is posted by crediting Other Expenses and debiting Rebillable Expenses accounts.
For approved production vendor Invoices that are left unbilled, during the posting of WIP to GL, it will reclass the expense by debiting the Production Invoice Accrual (Asset) and crediting the COGS account based on the Item selected on the line of the vendor invoice.
When the vendor invoice is billed, it will reverse out of WIP the next time WIP is posted by crediting the Production Invoice Accrual and debiting the COGS account based on the Item selected on the vendor invoice line.
Please refer to the Post Work In Progress guide for more information.