We are upgrading our SQL 2012/2014 on-premise Servers to new SQL2019 on-premise server (side-by-side upgrade). We got several packages (100-150) and some of these were developed by people who have left. We are not sure if got the source code (project solution) for all the packages, so we are tring to avoid the using the option to re-deploy the packages using source code.
Can any one advise on other different ways to migrate whole SSISDB like-to-like from 2012/2014 to 2019 SQL Server ? (Can we configure SSIDB Catalog on new Server, restore SSISDB from old Server with encryption key and then perform "Database upgrade"
?)