I cannot play the video, however, I suspect that it used a popular 'shortcut' method that was often used by support people to quickly create a vault copy for testing purposes.
While this method did work in the past, it was never the documented, official method.
The 'shortcut' method will not work because of database changes made to support PDM Standard.
The correct method is documented in the SOLIDWORKS PDM Installation Guide.
If you run into issues using the documented method, please open a support call with your VAR.
I think this is because your archive server does not match up from your source vault to the way you installed your new one for duplication.
In SQL Management Studio, under your new database in Object Explorer Expand Databases>Your duplicate database>Tables>File Tables, right click dbo.ArchiveServers and select Edit Top 200 Rows and ensure your Vault Name matches your new Duplicate Vault, The Archive Server and Archive Server Path is correctly matching
Verify this in Object Explorer >Databases>Tables>File Tables> right click dbo.SystemInfo and check this is all setup correctly as well.
Finally check your registry keys on the server: