Click the Office button, then click New, and click the My Templates link at the top left of the dialog. In the next dialog, click AutoCorrect.dotm and click OK.
When the document opens, you'll see a small dialog box with buttons for Backup, Restore, and Cancel. Click the Backup button. When the macro is done reading your AutoCorrect entries, the Save As dialog will open, and you can use the suggested name (AutoCorrect
Backup Document.docx) or change it.
That document contains a table with the shortcuts (in the left column) and the results (in the second column). The third column contains "False" if the entry is plain text or "True" if it's formatted.
As the name implies, the document serves as a backup of your entries. You can use the Restore button of the macro to read the entries from the document and put them into Word's list if something deleted or damaged the list.