Can A7.3.10 Job Cost accounts be secured after close?

Comments
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In the P510063 Job Master Revisions there is the field Posting Edit. It will prevent all posting to the Job if it is flagged with an "N". This will prevent all accounts with this job from having anything posted to the accounts.
96CCVC Posting Edit - Business Unit ( PECC )
Controls whether you can post transactions to the general ledger for the job
(business unit). Valid codes are:
Blank Yes, you can post transactions.
K Yes, you can post transactions. However, the original budget is
locked and change orders are required for changes to the budget.
N No, you cannot post transactions. Use this code for a job that is
not started or is closed. The job closing program automatically
assigns this code to all closed jobs.
P No, you cannot post transactions, and the job can be purged.0