Hi @Bilal H. Bhatt
According to your picture, you are storing packages in so called SSIS Catalog store. Adding packages to existing SSIS Visual Studio solution is possible only for packages stored in MSDB.
To import packages from SSISDB, go to solution in the Visual Studio Solution Explorer, and choose Add New Project, then choose Integration Services Import Wizard.
You may import package which located in SSISDB like shown below.
You may also follow the video for details.
Regards,
Zoe Hui
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