(core) - Fix ssrExchange.restoreData adding invalidated results #1776
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Related #1775
Resolve #1771
Summary
Prevent
ssrExchange().restoreData()
from adding results to the exchange that have already been invalidated. This may happen whenrestoreData()
is called repeatedly, e.g. per page. When a prior run has already invalidated an SSR result then the result is 'migrated' to the user'scacheExchange
, which means thatrestoreData()
should never attempt to re-add it again.Set of changes
ssrExchange
withnull
rather thandelete
null
entries to prevent overwriting invalidated results