Does a One Year Extension of Stay Cancel a ME Non-O Visa?

Surprisingly getting a yearly extension does NOT cancel a valid visa. :O

So for example; if you were on a multi-entry Non-Imm visa, then applied for a yearly extension, then foolishly left the country without buying a re-entry permit for that extension (which would cancel the extension stamp) you COULD re-enter the country on the Non-Imm visa and get a new 90 day stamp if it was still valid.

Most people get a yearly extension on the LAST entry of their Non_O visa, but you can apply for an extension on ANY of the 90 day entries as long as you have 30 days or less left on the entry stamp.