In the v5.0 branch, multiversion suites test against the v4.4 binary. findAndModify_flip_location.js should account for the race condition described in SERVER-14322. The fix to the race for findAndModify was never backported to v4.4 (SERVER-47212), so we should have the test account for this multiversion edge case. We already account for this in the v4.4 branches and older: https://github.com/mongodb/mongo/blob/058cf0c5b2a087256486373e2d9d3715afe54baf/jstests/concurrency/fsm_workloads/findAndModify_flip_location.js#L44-L49.