are you sure it was deleted.
Or could it have just been hidden, https://support.office.com/en-us/article/Hide-or-show-worksheets-or-workbooks-69f2701a-21f5-4186-87d7-341a8cf53344,
or VeryHidden http://www.excel-university.com/make-an-excel-worksheet-very-hidden/?

In reply to Re: Does Excel binary hold "old" information? by huck
in thread Does Excel binary hold "old" information? by emp1953

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