How do I amend shared data source definitions after SSRS migration to a diff node?

Do not seem to be able to find any place in the portal or Report Builder where I can actually edit the connect string & creds.

Report Manager shows the XML, but that really is it.

Disk files (from the looks of it) are no longer present in high versions (using SQL 2016/2017).

Is there a known location anywhere in GUI, or maybe direct edits in the SQL Server repository? I can't even delete a shared source anymore, only view or test the connection.

If anybody could post a screenshot, it'll be highly appreciated.

EDIT: Just found out - when I create a new Data Source, it's editable; the imported data sources are not.

Solution

There are two ways of doing this. You can set the 'overwrite datasource' option in the project properties.

Or, you can got to the report portal , show hidden items in the view menu and there is a folder called "data sources". Open this and you will see all data sources, from there you can edit and save changes. All reports that use that datasource will be affected.