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Type: Task
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Resolution: Fixed
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Priority: Major - P3
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Affects Version/s: None
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Component/s: None
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Fully Compatible
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Repl 2021-02-22, Repl 2021-03-08
Both recipientSyncData and donorStartMigration must fail if the FCV (on the recipient or donor respectively) is in the upgrading or downgrading state, or in a stable state less than 5.0.
(n.b. The 5.0 part appears to already be covered by the Feature Flag mechanism so only the upgrading/downgrading FCV needs to be handled. )