Short answer, Idunno, but actually is this an interesting question is a couple of contexts..
Scenario 1:? BobbySue not wanting the cal anymore if she self-unsubscribes from List-A.
Scenario 2:? BobbySue has been removed from a list by the owner/moderator for whatever reason and should also immediately be unsubscribed from the List-A cal for a very good reason.
Either example could have significant implications if it is a sensitive list, but in the second case I could see that being a big issue for a security or governing board list for example.
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Kenny Paul, Technical Program?Manager for
Pacific Time Zone
Kenny Paul