I need to deligate to the other Guild Masters the ability to maintain rosters but it keeps reseting to nothing selected (they are not members or nonmembers - nothing).
At what point are ranks being unset? During the Armory import? Remember, Characters and Accounts are not the same. If a character has the rank "Guild Master" it doesn't mean anything. The rank of the Website Account is what matters in terms of functionality. A character without a rank doesn't affect anything, it's purely aesthetic.
A website account, on the other hand, MUST have a rank, and cannot exist without one, and this is what controls the security functions.