Hello devs, I'd like to propose bringing *GEODE-7940 [1]* to the *support/1.12* branch. The bug is not new, seems quite old actually, but still seems pretty critical as it can lead to data loss in WAN topologies. Long story short: when there are multiple parallel *gateway-senders* attached to the same region and the user decides to stop, detach and *destroy* one of the senders (the destroy part is what actually causes the problem), the rest of the senders attached will silently stop replicating events to the the remote clusters and all these events will be lost. The fix has been merged into develop through commit *bfbb398 [2]*. Best regards.
[1]: https://issues.apache.org/jira/browse/GEODE-7940 [2]: https://github.com/apache/geode/commit/bfbb398891c5d96fa3a5975365b29d71bd849ad6 -- Ju@N
