This migration documentation applies only if you are using SharePoint OnPrem version in case that you already have configured the SharePoint URL. The SharePoint Online version is not affected
What has changed?
Starting with version 1.12.0 or later we have added support for SharePoint 2019. In order to achieve this we needed to make some changes to the Confluence configuration page of the SharePoint connector.
This means that if you navigate to the configuration page in Confluence you will not see the URL you have previously configured but instead you will see the following screen.
Will my app continue working?
Yes, your app will still continue working because your URL is already stored in the configuration but it just won’t show. Even thought the app will still continue working it is a good practice to update the configuration to have a consistent state for the app.
What do I need to do?
It is just necessary to reapply the configuration for SharePoint OnPrem and the configuration screen will show the correct URL after saving.
For more info on how to do this, follow the steps on the guide https://communardo-products.atlassian.net/wiki/spaces/SPONLINE/pages/148669749/Configure+the+Confluence+App+for+SharePoint+On-Premises+Latest+Server+DC