Understanding Day 7 Retention Calculation Across App Versions

When filtering a retention report by app version (let’s say 1.0), how is a person that performed the first event (Event A) in one app version (let’s say 1.0) on Day 0 and the second event (Event B) be in another app version (let’s say 2.0) on Day 7 is treated for calculating Day 7 Retention? Thanks!