Deleting main accounts in G/L

As I understand it, if I change the "active" status to "delete" on a GL Main account prior to closing the year, the account will be removed once I complete the year end process. If I do that, do I lose the history too? Many of these accounts have not been used in over 5 years, but will they still reside in history if I need to look something up? I currently have my "Years to Retain General Ledger History" set to '07' - does that mean anything up to seven years old with the soon-to-be deleted GL accounts will still reside in history?