Janeb-Have you tried the IBA for guidance? I was wondering the same thing about gl debits/credits. The 08-09 IL Guide to Bank Record Retention - IBA states original entry posting to the GL is RD+5yrs. But we have been imaging our docs for at least 5 yrs if not more so would it be necessary to have the boxes of gl tickets sitting around? Good luck and if I find out anything, I'll post it.
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For when I am weak, then I am strong. 2Cor 12:10