Postgres - major database version upgrade

[AnitaErnszt]

Hello,

Your docs don't clarify what will happen to our existing Stitch integrations when we upgrade the major Postgres version. We are on AWS Aurora and using logical replication slots.
We are aware that in order to upgrade we'll need to drop the existing replication slots and re-create them once we're done with the upgrade.

Is there anything we should be aware of?
As the lsn on the old replication slot and the new replication slot won't match, will Stich re-digest the database again?