replication slot disappears after upgrading to pg11

Mariel Cherkassky <[email protected]>
Newsgroups gmane.comp.db.postgresql.admin
Message-ID <CA+t6e1mf-VJOt2kGfZmuGjTM8vMAo6GtdN_tRtBUpG9cX_v62g@mail.gmail.com> 
Hey,
I have pg 9.6 with ha (2 nodes with repmgr 4.3) and a replicaiton slot that
is configured. As part of the upgrade to version 11 I also install the new
repmgr package for pg11. After the upgrade my replication slot isnt exist
anymore. Is that something normal ? I can create it again and the
replication will be back to normal, but still I'm trying to understand why
it is deleted every time.
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