After pointing the UIM connector to a different UIM database server the installation upgrade picks up the old database server name

Document ID : KB000097806
Last Modified Date : 24/05/2018
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UIM connector 3.9.0

The existing UIM connector was configured to a different UIM database server following the steps in this document: Now, when trying to run an installation to upgrade the UIM connector it picks up the old SQL server name.
You need to uninstall the existing connector, then run the new connector install in order to be able to get it to point to another UIM environment.