From what I can tell, my options for deleting a large list of GL accounts is:
a. Merge them into a ""dummy"" account (I think this can only be done between accounts of the same financial statement type - so not practical for large lists of different type accounts)
b. Flag them in account maintenance as ""deleted"" and presumably they purge during year-end <- This is what I did with a simple VI job into GL_Account and just change status to D.
c. Manually delete