grandfathering
To allow a subject to continue to function under an old rule, plan or policy, even after changes to that rule, plan or policy has been made. The change to the rule, plan or policy may include the abolishment of the rule, plan or policy itself.
DuJour Cellular is phasing out the ABC cell phone plan soon, but they're grandfathering members with existing ABC plan subscriptions. Grandfathered ABC plan subscribers can continue to use their old plans, but new subscriptions will not be allowed.
grandfathering by Tatertoot July 27, 2016
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