Hi @Smith, Carl,
Welcome to Microsoft Q&A!
You can install the “SQL Server Integration Services Projects” extension within Visual Studio:
click on Extensions menu > Manage Extensions > search “SQL Server Integration Services Projects” > select Download.
Then, the extension will be installed after all VS instances are closed.
After the SSIS extension is installed, you can re-open your SSIS project.
Sincerely,
Anna
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